OPINION ON REHEARING
TIM TAFT, Justice.
Appellant, Brenda Joyce Gainous (“Brenda”), has moved for rehearing of the Court’s August 24, 2006 judgment. Appel-lee, Thomas Earl Gainous (“Thomas”), has filed a response to Brenda’s motion. After due consideration, we grant Brenda’s motion for rehearing and withdraw our opinion and judgment dated August 24, 2006. We issue this opinion and judgment in their place.
Brenda appeals from the judgment denying her motion for enforcement or, alternatively, motion for clarification of the 1995 divorce decree between herself and her former husband, Thomas. We determine (1) whether some of Brenda’s challenges were collateral attacks, which could be raised after the trial court’s plenary power had expired, on a post-divorce qualified domestic relations order (“QDRO”) and (2) whether the divorce decree awarded Brenda half of Thomas’s benefits under the Houston Firemen’s Relief and Retirement Fund (“the Fund”).1 We reverse the judgment and remand the case.
Background
Brenda and Thomas were married on April 14, 1973. On June 19, 1978, Thomas began working for the Houston Fire Department. He then began participating in the Fund, which was a defined-benefit plan. The couple was divorced, by consent decree, on October 9, 1995, before Thomas was eligible to retire from the fire department. The decree provided, in pertinent part, that each party was awarded “[o]ne-haIf (1/2) of the Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAINOUS.” Neither party appealed the divorce decree, and no post-judgment motion challenging the decree appears in the record.
On January 25, 1996, the trial court entered a QDRO to effectuate the decree’s division of the Fund’s benefits. The record does not reveal who sought the QDRO, but it does show that Brenda sent the QDRO to the Fund. The QDRO provided, in pertinent part, as follows:
4. Plan Information. On the 9th day of October, 1995, [Thomas] had 16 years 11 months and 19 days of ser[101]*101vice under the Plan, [Thomas’s] total contributions as of such date are $37,967.47. [Thomas’s] average monthly salary (as defined in the Plan) as of such date is $3,163.79.
5.Benefit Award. The Court hereby awards to [Brenda] 50% of each payment otherwise payable to [Thomas] from the Plan after the date specified in Paragraph 4, but only with respect to the portion of such payment that is based on [Thomas’s] accrued benefit as of such date (taking into account only contributions as of such date). If the payment to [Thomas] is a refund of contributions, the benefit calculated as of the date specified in Paragraph 4 shall be adjusted on a proportionate basis for any earnings attributable to such benefit under the terms of the Plan from such date to the date of distribution. This Paragraph does not award [Brenda] any interest in any monthly amounts credited to any DROP [deferred retirement option plan] account established for [Thomas] under the terms of the Plan. This award applies to each type of benefit distribution under the Plan (including a service, deferred, or disability retirement pension, and a withdrawal of contributions) other than a distribution from any DROP account established on behalf of [Thomas]. The provisions of this Paragraph 5 shall be construed to fix the amount (but not the type) of [Thomas’s] benefit that is subject to division and payment to [Brenda] as of the date set forth in Paragraph 4, and shall be determined under the terms of the Act [Tex.Rev.Civ. Stat. Ann. art. 6243e.2(l) (Vernon Supp.2006) ] in effect on such date. The award to [Brenda] herein shall not be increased by [Thomas’s] additional contributions, service accruals, or salary increases occurring after the date set forth in Paragraph 4.
6. DROP Account. Notwithstanding any other provision of this Order, [Brenda] shall not share in any portion of the contributions to or distributions from a DROP account established under the Plan on behalf of [Thomas].
7. Cost of Living Adjustments. The amount payable to [Brenda] under Paragraph 5 shall not be increased by any cost of living adjustments made to [Thomas’s] benefit after the date set forth in Paragraph 4.
8. Time and Manner of Payment. The Plan shall make payments to [Brenda] of the amount specified in Paragraph 5, if, as, and when payments are made to [Thomas]....
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11. Limitations. This Order and the award to [Brenda] herein is expressly made subject to the following provisions:
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g. This Order shall not be interpreted to award [Brenda] any future benefit increases that are provided or required by the Legislature.
h. In the event that after the date of this Order, the amount of any benefit otherwise payable to [Thomas] is reduced by law, the portion of benefits payable to [Brenda] shall be reduced by a proportionate amount.
(Emphasis added.) Neither party appealed the QDRO, and no post-judgment motion challenging the QDRO appears in the record.
On June 19, 1998, upon 20 years of service with the fire department, Thomas became eligible to retire. See Tex.Rev.Civ. Stat. Ann. art. 6243e.2(l), § 4(a) (Vernon Supp.2006). Rather than retire, however, [102]*102Thomas elected to participate in the Fund’s Deferred Retirement Option Plan (“DROP”) on November 1, 1998. See id. § 5 (Vernon Supp.2006). Under the Fund’s DROP, Thomas could, for up to 10 years, continue as an active employee while having an amount equal to his service-pension benefit,2 plus continued pension contributions from his salary, credited to a “notional” DROP account, with the account’s total sum to be distributed to or held for him upon retirement. See id. By the end of October 2003, Thomas’s DROP balance with the Fund was $157,033.72.3
In approximately August 2003, Thomas retired. Shortly before then, on June 25, 2003, Brenda filed a motion for enforcement or for clarification of the divorce decree and later amended that motion. Among other things, Brenda argued that (1) the QDRO “reduced and materially altered” the division of the Fund benefits by excluding her from sharing in any portion of the DROP payments; (2) “a conflict” thus existed “between the provisions of the [divorce] decree and the QDRO,” so that the divorce decree’s award to her of a portion of the Fund’s retirement benefits “may not be specific enough to be enforceable by contempt” and should be “clarified”; and (3) she was also entitled to receive a portion of four other Fund benefits, which were not technically Thomas’s service-pension distributions, but which Thomas would receive at retirement from the Fund as part of his overall benefit. In all, Brenda sought an order clarifying that she was to receive not only her portion of the service-pension benefit that Thomas received (to which Thomas has never disputed that Brenda is entitled), but also a portion of the following Fund benefits, the dispute over which forms the basis of this appeal:
• the DROP funds, including a two percent increase in benefits accrued for each year of Thomas’s DROP participation, but excluding bi-weekly contributions that Thomas continued to make to the DROP account while working during DROP participation;4
• an annual three percent cost-of-living adjustment (“COLA”), applied to her portion of Thomas’s service-pension benefits and DROP account balance;
• a one-time, lump-sum payment of $5,000 that Thomas would receive upon retirement;5
• a $150 monthly supplemental payment, which Thomas would begin receiving upon retirement;6 and
• an annual supplemental payment benefit, also called the “13th-benefit payment,” which was intended to help pensioners of low income, and which [103]*103Thomas could begin receiving upon retirement.7
Thomas responded below that (1) res judicata and estoppel barred Brenda’s claim to the DROP funds and the COLAs because the 1996 QDRO, which she had not appealed, expressly precluded her receiving any of these benefits; (2) Government Code chapter 804 precluded her receiving a portion of the DROP funds;8 (3) Government Code chapter 804 also precluded her receiving a portion of any post-divorce COLAs;9 and (4) the Legislature did not create the remaining three benefits that she sought until after the divorce date, precluding their being community property.
In January 2004, after having held an evidentiary hearing, the trial court denied Brenda’s motion to enforce or to clarify and rendered a take-nothing judgment against her. At the time of the hearing, Brenda was receiving approximately $500 per month from the Fund, while Thomas was receiving approximately $2,000. Brenda filed a motion seeking a new trial, reconsideration, or reformation. The trial court denied the motion. The trial court did not enter fact findings or legal conclusions.
Standard of Review
We review the trial court’s ruling on a post-divorce motion for enforcement or clarification of a divorce decree under an abuse-of-discretion standard. See In re Marriage of McDonald, 118 S.W.3d 829, 832 (Tex.App.-Texarkana 2003, pet. denied). When a trial court makes no separate findings of fact or conclusions of law, we must draw every reasonable inference supported by the record in favor of the trial court’s judgment. See Worford v. Stamper, 801 S.W.2d 108, 109 (Tex.1990). Additionally, “the judgment of the trial court must be affirmed if it can be upheld on any legal theory that finds support in the evidence.” Lassiter v. Bliss, 559 S.W.2d 353, 358 (Tex.1977), overruled on other grounds, Cherne Indus., Inc. v. Magallanes, 763 S.W.2d 768 (Tex.1989). Nonetheless, in cases in which the appellate record includes the reporter’s record, the trial court’s implied fact findings are not conclusive and may be challenged for legal and factual sufficiency of the evidence supporting them. See Tucker v. Tucker, 908 S.W.2d 530, 532 (Tex.App.-San Antonio 1995, writ denied). We review implied legal conclusions de novo. See State v. Heal, 917 S.W.2d 6, 9 (Tex.1996).
The DROP Funds
Under issues one, two, and three, Brenda challenges the trial court’s denial of her motion to enforce or to clarify the divorce decree to the extent that that ruling denied her any portion of Thomas’s DROP funds.
A. The Terms of the DROP
The Fund’s summary plan description, like the statute on which the plan was based, provided that DROP participation, which was available to firefighters with 20 or more years of participation, would allow them “to accumulate, for up to ten (10) years, a separate sum of money toward retirement while still working as an active employee” and described that sum as a “cash amount for retirement to be paid in addition to your [the employee’s] monthly [104]*104retirement benefit.”10 See Tex.Rev.Civ. Stat. Ann. art. 6243e.2(l), § 5(a)-(c) (Vernon Supp.2006). Both the statute and the plan provided that the DROP participant’s monthly service-pension benefit amount would be established as of the DROP entry date (which would also be considered the date of service termination upon actual retirement later on), with the value of that monthly service-pension benefit being credited to the DROP account, along with all interest and the firefighter’s pension contributions, earned during continued employment. See id. § 5(b), (c), (i) (Vernon Supp.2006). That is, as the Fund’s summary plan description advised,
When you enroll [in the DROP], you ‘lock in’ your service and benefit levels as of the date your participation in the DROP takes effect.... While you work, the Fund credits the value of your monthly retirement benefit (based on your service as of the date you entered the DROP) into a notional DROP account. ... As long as you participate, the value of the retirement benefit calculated for you upon entry into the DROP and your employee contribution amounts are credited to your account each month, and your account earns interest.
See id. § 5(b), (c).
The statute and plan also provided that, upon the firefighter’s actual retirement, the DROP account balances could be distributed in a lump sum, and the plan provided, alternatively, that the DROP sums could be left in the DROP account to accrue interest, less an administrative fee. See id. § 5(a), (e) (Vernon Supp.2006). Pursuant to both the statute and the plan, the firefighter’s monthly benefit at retirement would be increased two percent for every year of DROP participation, to be applied to the original service-pension benefit upon actual retirement, but not to be added to the DROP account. See id. § 5(a). In addition, the statute provided that
A member who has made a DROP election is not classified as retired, eligible to be paid, or eligible to accrue or to receive any benefit that is accrued or received by a member who has terminated active service ... unless the member who has made the DROP election has terminated active service.
Id. § 5(o) (Vernon Supp.2006).
B. The QDRO’s Provisions Concerning the DROP
The QDRO expressly precluded any portion of the DROP funds’ being paid to Brenda. Like the QDRO, the Fund’s policies and procedures provided that DROP “[c]ontributions (both monthly benefit payments and member contributions) to the member’s DROP account [would] not be affected by a QDRO applicable to the member.”11
C. Brenda’s Collateral Attack
The QDRO, which was entered after the trial court’s plenary power over the divorce decree had expired, clearly precluded Brenda’s receiving any portion of the DROP funds. A QDRO is a final, appealable order. See, e.g., Reiss v. Reiss, 118 S.W.3d 439, 441 (Tex.2003) (considering appeal of post-divorce QDRO). Bren[105]*105da did not appeal the QDRO. Res judicata applies to final divorce decrees and, under the same logic, applies to final post-divorce orders. See Baxter v. Ruddle, 794 S.W.2d 761, 762 (Tex.1990) (divorce decree); see also Tex. Fam.Code Ann. §§ 9.103, 9.104 (Vernon 1998). Moreover, Brenda had the QDRO approved by the Fund and relied on the QDRO for approximately seven years before her challenge. Accordingly, estoppel might also normally bar her challenge. Cf. Waite v. Waite, 150 S.W.3d 797, 803 (Tex.App.-Houston [14th Dist.] 2004, pet. denied) (noting, on appeal of divorce decree, that party who accepts judgment’s benefits is estopped from challenging judgment by appeal).
1. Brenda’s Arguments
Brenda recognizes these potential obstacles, but contends that she may nonetheless challenge the QDRO because hers is a collateral attack, which is not barred by res judicata or estoppel. Brenda reasons as follows: (1) the divorce decree awarded her a contingent interest in Thomas’s service-pension benefits, which included the DROP funds as a matter of law; (2) the QDRO conflicted with the divorce decree by impermissibly restricting the division of Thomas’s service-pension benefits by excluding the DROP funds from that property division; (3) the Family Code prohibits post-divorce orders that amend, modify, alter, or change the divorce decree’s property division; and (4) the QDRO is void for impermissibly having done so.12
2. The Law of Collateral Attack
A collateral attack does not attempt to secure the rendition of a single, correct judgment in place of a former one, but, instead, seeks to avoid the effect of a judgment through a proceeding brought for some other purpose. Armentor v. Kern, 178 S.W.3d 147, 149 (Tex.App.-Houston [1st Dist.] 2005, no pet.). To prevail in a collateral attack, a party to the original judgment must show that the complained-of judgment is void, not simply voidable. Id. A judgment is void only when the court rendering judgment “ ‘had no jurisdiction of the parties, no jurisdiction of the subject matter, no jurisdiction to enter the judgment, or no capacity to act as a court.’ ” Saudi v. Brieven, 176 S.W.3d 108, 113 (Tex.App.-Houston [1st Dist.] 2004, pet. denied) (quoting Cook v. Cameron, 733 S.W.2d 137, 140 (Tex.1987)). If the challenged order is only voidable, as opposed to void, the collateral attack fails. Ramsey v. Ramsey, 19 S.W.3d 548, 552 (Tex.App.-Austin 2000, no pet.) (expressly stating same in collateral attack of divorce decree); see Armentor, 178 S.W.3d at 149.
“ ‘Subject-matter jurisdiction may not be conferred by consent, waiver, or estoppel at any stage of a proceeding.’ ” Saudi, 176 S.W.3d at 113 (quoting Tourneau Houston, Inc. v. Harris County Appraisal Dist., 24 S.W.3d 907, 910 (Tex. App.-Houston [1st Dist.] 2000, no pet.)). One may thus raise a collateral attack challenging a void order at any time, and res judicata is not a bar to the attack. See id. (reasoning that lack of subject-[106]*106matter jurisdiction is fundamental error that may be recognized by appellate court sua sponte or by party for first time on appeal); see also State ex rel. Latty v. Owens, 907 S.W.2d 484, 486 (Tex.1995) (indicating that one need not appeal void judgment). In a collateral attack, the challenged order is presumed valid, and the party challenging it has the burden to show that it is void. See Stewart v. USA Custom Paint & Body Shop, Inc., 870 S.W.2d 18, 20 (Tex.1994) (presumption); Armentor, 178 S.W.3d at 149 (burden).
3. The Validity of the QDRO’s DROP Provisions
If Brenda is correct that the QDRO is void to the extent that it barred her from sharing in a portion of the DROP funds, then she may challenge those QDRO provisions even at this late time and despite having relied on the QDRO previously. Otherwise, her challenge fails because of res judicata and estoppel. Therefore, we examine whether the QDRO’s challenged provisions are void.
a. The Trial Court’s Jurisdiction to Clarify and to Enforce the Divorce Decree
A court that rendered a divorce decree generally retains continuing subject-matter jurisdiction to clarify and to enforce the decree’s property division. Tex. Fam. Code Ann. §§ 9.002, 9.008 (Vernon 1998). Specifically, the court has continuing jurisdiction to “render further orders to enforce the division of property made in the decree of divorce ... to assist in the implementation of or to clarify the prior order.” Id. § 9.006(a) (Vernon 1998). Likewise, “[o]n a finding ... that the original form of the division of property is not specific enough to be enforceable by contempt,” the court has continuing jurisdiction to “render a clarifying order setting forth specific terms to enforce compliance with an original division of property.” Id. § 9.008(b) (Vernon 1998).
However, there are limitations on the enforcement and clarification powers of the court that rendered the divorce decree. For example, “[t]he court may specify more precisely the manner of effecting the property division previously made if the substantive division of property is not altered or changed.” Id. § 9.006(b) (Vernon 1998) (emphasis added). More specifically, the Family Code provides:
(a) A court may not amend, modify, alter, or change the division of property made or approved in the decree of divorce or annulment. An order to enforce the division is limited to an order to assist in the implementation of or to clarify the prior order and may not alter or change the substantive division of property.
(b) An order under this section that amends, modifies, alters or changes the actual, substantive division of property made or approved in a final decree of divorce or annulment is beyond the power of the divorce court and is unenforceable.
Id. § 9.007(a)-(b) (Vernon 1998) (emphasis added); see Shanks v. Treadway, 110 S.W.3d 444, 449 (Tex.2003).
Thus, the court that rendered the divorce decree (or any other final order dividing property) also retains continuing, exclusive jurisdiction to render an enforceable QDRO (or similar order) “permitting payment of pension, retirement plan, or other employee benefits divisible ... to an alternate payee or other lawful payee.” Tex. Fam.Code Ann. § 9.101(a) (Vernon 1998). A party may petition the court for a QDRO in two circumstances: (1) the court has not previously issued a QDRO or similar order permitting payment of benefits from a pension, retirement, or other employee-benefits plan or (2) the plan ad[107]*107ministrator (or person acting in equivalent capacity) has determined that a previously entered QDRO does not satisfy the requirements for a QDRO. Id. §§ 9.103, 9.104 (Vernon 1998); see McKnight v. Trogdon-McKnight, 132 S.W.3d 126, 132 (Tex.App.-Houston [14th Dist.] 2004, no pet.) (refusing to affirm entry of amended QDRO when original QDRO did not conflict with terms of divorce decree). Furthermore, like a final divorce decree, a final QDRO may be clarified under Family Code section 9.008. In re Marriage of Jones, 154 S.W.3d 225, 228 (Tex.App.-Texarkana 2005, no pet.) (“Section 9.008 allows clarification of a QDRO that is technically adequate but for some reason needs to be made clearer.”).
A QDRO is a species of post-divorce enforcement or clarification order. See Shanks, 110 S.W.3d at 449 (indicating same by holding, “[A] court ‘may not amend, modify, alter, or change the division of property made or approved in the decree of divorce.’ ... The district court was therefore without authority to enter a QDRO altering the terms of the decree by limiting [former wife] to [an interest less than that awarded under the divorce decree].”) (quoting Tex. Fam.Code Ann. § 9.007(a)); In re Marriage of Jones, 154 S.W.3d at 228 (indicating same by concluding, “Although [Family Code sections 9.101, 9.103, and 9.104] allow a trial court to create a QDRO where none exists, or to correct language in a QDRO that renders it defective, they do not permit a court to substantively change a property division. A court may not amend, modify, alter, or change the division of property made or approved in the decree of divorce.”). Therefore, as with any post-divorce enforcement or clarification order, a QDRO may not amend, modify, alter, or change the division of property made or approved in the decree of divorce or annulment. See Shanks, 110 S.W.3d at 449; In re Marriage of Jones, 154 S.W.3d at 228; Pate v. Pate, 874 S.W.2d 186, 189 (Tex.App.-Houston [14th Dist.] 1994, writ denied); see also Tex. Fam.Code Ann. § 9.007(a).
The threshold issue is, thus, whether the trial court is without subject-matter jurisdiction to enter a postrdivorce order that violates Family Code section 9.007 by amending, modifying, altering, or changing the divorce decree’s property division because, if the court lacks subject-matter jurisdiction to enter such an order, then that order is void. See Saudi 176 S.W.3d at 113. Conversely, if the trial court has subject-matter jurisdiction to enter such an order, then that order is erroneous and voidable, but not void. See id.; Ramsey, 19 S.W.3d at 552.
Section 9.007(b) provides that orders amending, modifying, altering, or changing the divorce decree’s property division are “beyond the power of the divorce court,” and the section itself is entitled “Limitation on Power of Court to Enforce.” Tex. Fam.Code Ann. § 9.007(b) (emphasis added). Similarly, when describing section 9.007’s limitation on post-divorce enforcement and clarification, case law employs terms like “power,” “jurisdiction,” and “authority.”13 These terms in[108]*108dicate matters of subject-matter jurisdiction. See Reiss v. Reiss, 40 S.W.3d 605, 613-14 & n. 8 (Tex.App.-Houston [1st Dist.] 2001) (indicating that these and similar terms indicate jurisdiction), rev’d on other grounds, 118 S.W.3d 439 (Tex.2003). Moreover, by their very nature, Family Code sections 9.002, 9.006, 9.008, 9.101, 9.103, and 9.104 provide for limited, post-judgment jurisdiction that may be invoked only in particular circumstances, rather than for plenary, original jurisdiction. Cf. Helton v. R.R. Comm’n of Tex., 126 S.W.3d 111, 118 (Tex.App.-Houston [1st Dist.] 2003, pet. denied) (holding, in considering nature of statutory prerequisites to suit for judicial review from administrative ruling, that “[i]f a statutory requirement ‘defines, enlarges, or restricts the class of cause the [trial] court may decide or the relief the court may award,’ the requirement is jurisdictional.”) (quoting Sierra Club v. Tex. Natural Res. Conservation Comm’n, 26 S.W.3d 684, 688 (Tex.App.Austin 2000), aff'd on other grounds, 70 S.W.3d 809 (Tex.2002)). Accordingly, we hold that section 9.007 is jurisdictional and that orders violating its restrictions are void.
b. The Divorce Decree’s Division of Thomas’s Retirement Benefits in the Fund, Including DROP Funds
For the above reasons, we must next determine whether the QDRO’s DROP provisions violated Family Code section 9.007 by conflicting with the divorce decree’s division of Thomas’s retirement-related benefits in the Fund. That is, we must determine whether the divorce decree’s division of these benefits included DROP funds, so that the QDRO impermis-sibly precluded Brenda from receiving them at any time. If these provisions of the QDRO and the divorce decree conflict, then the QDRO’s DROP provisions are void and unenforceable; Brenda may maintain a collateral attack to challenge them; Brenda is entitled to the portion of these monies awarded her in the divorce decree; and the trial court could enter a clarifying order so providing. In contrast, if these provisions of the QDRO and divorce decree do not conflict, then the QDRO’s DROP provisions are valid; Brenda’s collateral attack against them will fail; Brenda is not entitled to any portion of the DROP funds; and the trial court did not abuse its discretion in denying her motion to enforce or to clarify for that reason.
“When interpreting a divorce decree, courts apply the general rules regarding construction of judgments.” Shanks, 110 S.W.3d at 447. “Judgments should be construed as a whole to harmonize and [to] give effect to the entire decree.” Id. “ ‘[I]f the decree, when read as a whole, is unambiguous as to the property’s disposition, the court must effectuate the order in light of the literal language used.’ ” Id. (quoting Wilde v. Murchie, 949 S.W.2d 331, 332 (Tex.1997)). “If the decree is ambiguous, the court should review the record along with the decree to aid in interpreting the judgment.” Id. “[W]hether a divorce decree is ambiguous is a question of law.” Id.
The divorce decree awarded Brenda “[o]ne-half (1/2) of the Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAINOUS.” Nothing in the plain language of the divorce decree excluded benefits such as DROP funds from the division of Thomas’s retirement-related benefits in the Fund. Moreover, the decree provides that Brenda receive half of the “Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAINOUS,” not [109]*109half of just the service-pension benefits standing in the name of Thomas E. Gai-nous. (Emphasis added.) This language is broad enough to give Brenda an interest in Thomas’s Fund benefits like the DROP funds.
In fact, this language is broad enough to award Brenda half of all of Thomas’s benefits in the Fund, not just those that could be considered community property. The Texas Supreme Court has generally adopted the following formula for determining a non-employee spouse’s community-property award of the employee spouse’s defined-benefit plan when the latter began plan participation during marriage, but retired after divorce: 50% x [ (number of months married and in plan) -h (number of months in plan at time of retirement) ] x (monthly benefit that employee would have received at divorce date, whether then eligible to retire or not). See Berry v. Berry, 647 S.W.2d 945, 947 (Tex.1988) (modifying apportionment formula in Taggart v. Taggart, 552 S.W.2d 422 (Tex.1977)). This formula excludes post-divorce increases in the employee spouse’s retirement benefits — such as raises, promotions, services rendered, and contributions — that are the employee spouse’s separate property because they are attributable to his continued employment after divorce. See Phillips v. Parrish, 814 S.W.2d 501, 505 (Tex.App.-Houston [1st Dist.] 1991, writ denied). In awarding Brenda “[o]ne-half (1/2) of the Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAINOUS,” the divorce decree did not adopt a Berry formula. Rather, the divorce decree awarded Brenda half of all of Thomas’s retirement-related benefits from the Fund, without the type of qualification that Berry requires. That is, the divorce decree’s award to Brenda of Thomas’s Fund benefits necessarily — albeit improperly — included some of Thomas’s separate-property benefits in the Fund, i.e., half of his separate-property, post-divorce benefits attributable to his continued employment.14 See Reiss, 118 S.W.3d at 442 (holding that divorce decree, which provided that non-employee spouse “shall receive fifty percent (50%) of such retirement or pension benefit to which [employee spouse] is entitled” unambiguously awarded non-employee spouse half of total re[110]*110tirement benefits, rather than half of community-property portion of those benefits, despite decree’s repeatedly and expressly reciting elsewhere that pension benefits were “community property” and that court was dividing “community property”);15 see also Shanks, 110 S.W.3d at 447-48 (in concluding that unappealed divorce decree, which provided that non-employee spouse was to receive “a 'pro rata’ interest ... of any and all sums received or paid to [employee spouse] from such pension or retirement plan,” unambiguously awarded non-employee spouse half of total retirement benefits, rather than half of community-property portion of those benefits, court reasoned that “the trial court awarded [the non-employee spouse] an interest in all sums received under such plan, not an interest of presently accrued benefits under such plan”) (emphasis in original). A division awarding a spouse the other spouse’s separate property is unconstitutional and erroneous, but not void. See Reiss, 118 S.W.3d at 443. That mistake could have been corrected in a direct appeal, but it was not; it cannot be corrected 10 years after the fact. See id.
We disagree with Thomas that the phrase “standing in the name of THOMAS E. GAINOUS” can be construed to mean “on the day of divorce” and thus may be read to preclude the DROP funds from Brenda’s award simply because Thomas was not then eligible to elect to receive them, i.e., he did not then have 20 years of service. Even if contingent benefits’ un-vested status during marriage could somehow be equated with their non-existence during marriage,16 this decretal language does not mean what Thomas claims. Rather, “standing in the name of THOMAS E. GAINOUS” modifies “the Houston Firemen’s Relief and Retirement Fund,” so that the decree awards Brenda an interest only in Thomas’s retirement account funds. The phrase is not the equivalent of “on the day of divorce.” When no one appeals a divorce decree, courts must generally enforce its unambiguous provisions as written, and those provisions favor Brenda. See Shanks, 110 S.W.3d at 447; see also Reiss, 118 S.W.3d at 442.
We further disagree with Thomas that the absence in the divorce decree of language such as “if, as, and when received by Thomas” indicated that the decree was intended to divide only those Fund benefits existing on the divorce date. The Shanks court recently concluded that phrases like that quoted immediately above are not terms of art evidencing an intent to value a pension plan at the time of receipt, rather than at the time of divorce; instead, they merely reflect the [111]*111contingent nature of the interest awarded, not that interest’s value. See Shanks, 110 S.W.3d at 449 n. 7. Accordingly, the lack of this phrase does not indicate an intent either to value Brenda’s award as of the divorce date or to award her only a portion of the benefits extant on that date, but merely acknowledges that the divided benefit might never come to fruition. See id.
We hold that the divorce decree unambiguously included the DROP funds in its award to Brenda of “[o]ne-half (1/2) of the Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAINOUS.” Because the QDRO precluded Brenda from receiving any portion of Thomas’s DROP funds at any time, the QDRO impermissibly altered the decree’s property division and was void to the extent that it did so. See Tex. Fam.Code Ann. § 9.007(b). Because the QDRO’s provision excluding the DROP funds from Brenda’s award was void, Brenda could properly challenge it by collateral attack, and res judicata and estoppel did not bar her challenge.
D. Disposition
For these reasons, we hold that the trial court abused its discretion by misconstruing the divorce decree as not having divided Thomas’s DROP funds and, therefore, that the court also abused its discretion by denying Brenda’s motion to enforce or to clarify to the extent that she sought a portion of Thomas’s DROP funds. We sustain issues one through three to the extent that they challenge the trial court’s refusal to enter an order enforcing or clarifying the divorce decree’s award to her of a portion of Thomas’s DROP funds.
The COLAs
Also under issues one, two, and three, Brenda challenges the trial court’s denial of her motion to enforce or to clarify to the extent that that ruling denied COLA increases to her portion of Thomas’s service-pension benefits and of his DROP account balance.
Article 6243e.2(l) does not expressly mention COLAs, but Brenda’s expert explained that COLAs were “non-statutory” benefits that the Fund had discretion to adopt under authority generally allowing increases to the Fund’s benefits under certain circumstances. See Tex.Rev.Civ. Stat. Ann. art. 6243e.2(l), § 10 (Vernon Supp. 2006) (entitled “Nonstatutory benefit increases”). The Fund’s summary plan description contained the following provisions concerning COLAs:
Upon reaching eligibility, benefits (including survivor benefits) from the plan will be adjusted each year by a 3% Cost of Living Adjustment, or COLA. This adjustment will be added to your monthly benefit:
• Starting with the October after you ... retired if you were 48 years of age at the date of retirement.
• On your 48th birthday....
If you are eligible for [COLAs] that are made during your participation in the DROP, your monthly pension benefit (being made to your DROP account) will be adjusted by the value of the COLA.
The 1996 QDRO expressly precluded the application of COLAs to Brenda’s portion of Thomas’s service-pension benefits (and of Thomas’s DROP benefits, as well, because the 1996 QDRO excluded DROP funds altogether): “The amount payable to [Brenda] under Paragraph 5 shall not be increased by any cost of living adjustments made to [Thomas’s service-pension or DROP] benefits] after the date [of divorce].”
Brenda again raises a collateral attack, arguing that the QDRO’s COLA provision is void because the divorce de[112]*112cree awarded her a portion of this type of benefit. For the reasons set out earlier, we conclude that, if the QDRO’s COLA provision and the divorce decree’s property division conflict, the QDRO’s provision is void, and Brenda may maintain her collateral attack. We thus determine whether the QDRO is void in this respect.
As noted above regarding the DROP, nothing in the plain language of the divorce decree excluded benefits like COLAs from the division of Thomas’s retirement-related benefits in the Fund. And as we recognized above, the decree provided that Brenda receive half of the “Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAINOUS,” not simply half of Thomas’s service-pension benefits. Finally, for the reasons set out above, we also reject Thomas’s arguments that the decree’s phrase “standing in the name of THOMAS E. GAINOUS” can be equated with “on the day of divorce” or that the lack of language like “if, as, and when received” limited the portion or value of Brenda’s award to the date of divorce. We thus hold that the divorce decree’s language is broad enough to include COLAs to her portion of Thomas’s service-pension benefits and DROP account under the Fund, regardless of whether the COLAs can be considered community or separate property.17
We thus hold that the divorce decree unambiguously included COLAs to Thomas’s service-pension benefits and DROP funds under the Fund in its award to Brenda of “[o]ne-half (1/2) of the Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAI-NOUS.” Because the QDRO excluded COLAs from being applied to any award of Thomas’s service-pension and DROP benefits that Brenda would receive at any time, the QDRO impermissibly altered the decree’s property division and was void to the extent that it did so. See Tex. Fam.Code Ann. § 9.007(b). Because the QDRO’s provision excluding these COLAs from Brenda’s award was void, Brenda could properly challenge it by collateral attack, and res judicata and estoppel did not bar her challenge.
For these reasons, we hold that the trial court abused its discretion by misconstruing the divorce decree as not having divided Thomas’s COLAs on a portion of Thomas’s service-pension and DROP benefits and, therefore, that the court also abused its discretion by denying Brenda’s motion to enforce or to clarify to the extent that she sought COLAs on a portion of those benefits. We thus sustain issues one through three to the extent that they challenge the trial court’s refusal to enter an order enforcing or clarifying the divorce decree’s award to her of COLAs on a portion of those benefits.
The Remaining Benefits
Finally under issues one, two, and three, Brenda challenges the trial court’s denial [113]*113of her motion to enforce or to clarify to the extent that that ruling denied her any portion of (1) the one-time $5,000 lump-sum payment; (2) the $150 monthly supplemental payment; and (3) the annual supplemental payment benefit, also called the “13th-benefit payment.”
A. The Divorce Decree’s Language
As with the other benefits discussed herein, the divorce decree’s award of “[o]ne-half (1/2) of the Houston Firemen’s Relief and Retirement Fund standing in the name of THOMAS E. GAI-NOUS” does not expressly exclude these benefits from the property division; awards Brenda a half interest in “the ... Fund,” rather than in simply Thomas’s service-pension benefits; and cannot be read to restrict Brenda’s interest to that existing on the date of divorce. Accordingly, whether these benefits were community or separate property, the divorce decree gave half of them to Brenda.18
B. Disposition
We hold that the trial court abused its discretion by misconstruing the divorce decree as not having divided Thomas’s onetime $5,000 lump-sum payment, the $150 monthly supplemental payment, and the 13th-benefit payment and, thus that the court also abused its discretion by denying Brenda’s motion to enforce or to clarify to the extent that she sought a portion of these three benefits. We thus sustain issues one through three to the extent that they challenge the trial court’s refusal to enter an order enforcing or clarifying the divorce decree’s award to her of these three remaining benefits.
Government Code Section 804.003(g)(7)
Under issue four, Brenda argues that the trial court’s judgment, to the extent that it concerns the DROP funds and COLAs, cannot be supported by an implied legal conclusion that Government Code section 804.003(g)(7) precluded the award of any of these funds to her. See Tex. Gov’t Code Ann. § 804.003(g)(7) (Vernon 2004).
Section 804.003(g)(7) provides that a public retirement system “may reject a domestic relations order as a [QDRO] unless the order ... does not purport to award any future benefit increases that are provided or required by the legislature ” Tex. Gov’t Code Ann. § 804.003(g)(7) (Vernon 2004). The Fund’s policies and procedures provided that DROP contributions would not be affected by a QDRO. The 1996 QDRO provided, “This Order shall not be interpreted to award [Brenda] any future benefit in[114]*114creases that are provided or required by the Legislature.”
Thomas argued below that section 804.003(g)(7) allowed the Fund to prevent Brenda from obtaining any QDRO at any time awarding her a portion of the DROP funds or a portion of COLAs on his service-pension benefits and DROP funds. In support, Thomas reasoned that, because the DROP account did not exist until after the divorce, that account was allegedly his separate property; thus, Thomas concluded, the account was also a “future benefit increase[ ] ... provided or required by the legislature,” and the Fund (and thus the trial court) could properly reject any QDRO purporting to make such an award — such as the one that Brenda sought by her 2003 motion to enforce or to clarify. He argued below that section 804.003(g)(7) precluded post-divorce COLAs for the same reasons.19
By its plain terms, section 804.003(g)(7) has nothing to do with whether a trial court may apportion future contingent retirement benefits like these in a divorce decree or whether these types of contingent benefits are community or separate property. A more reasonable interpretation of section 804.003(g)(7) than Thomas’s is that section 804.003(g)(7) allows a public retirement system to reject a QDRO that awards this type of benefit increase when, at the time that the QDRO is obtained, that benefit increase has not yet matured or accrued. Once Thomas retired in approximately August 2003, the Fund could no longer reject, under section 804.003(g)(7), a QDRO concerning Thomas’s DROP funds and any COLA increases to Brenda’s portion of Thomas’s service-pension benefits and DROP account balance.
To read section 804.003(g)(7) as Thomas does potentially allows a public retirement system to refuse to qualify a domestic relations order that validly apportions matured retirement benefits that an unap-pealed divorce decree awarded to the non-employee spouse-properly or improperly. We do not deem the Legislature to have intended such an absurd result. See Tex. Gov’t Code Ann. §§ 311.021(3) (Vernon 2005) (“In enacting a statute, it is presumed that: ... (3) a just and reasonable result is intended.... ”); 311.023(4), (5) (Vernon 2005) (“In construing a statute, ... a court may consider among other matters the: ... (4) common law ..., including laws on the same or similar subjects; [and] (5) consequences of a particular construction.... ”).
We sustain issue four.
Conclusion
We reverse the judgment and remand the cause for the trial court for further proceedings consistent with this opinion.
Justice KEYES, concurring.
Justice HANKS, concurring in the judgment.