OPALA, Vice Chief Justice.
The dispositive issues are: 1) Did the trial court have the authority to vacate its decree and to pronounce a new decision on the merits in response to a timely term-time “motion to reconsider” rested on grounds different from those prescribed by 12 O.S.1981 § 10311 as well.as on grounds [36]*36which may have been available to the mov-ant under 12 O.S.1981 § 651, which motion was filed more than ten but within thirty days of the decree’s rendition?2 and 2) If so, does the trial court’s order of vacation that is combined with its new decree on the merits manifest an exercise of sound discretion in that the decision rests on a sufficient cause? We answer both questions in the affirmative.
Appellant, Mildred L. Schepp [Schepp], as conservator for Vaney Bell Stoss’ [her mother’s] estate, sued to cancel a deed by which the mother — reserving in herself a life estate — conveyed the remainder to Schepp’s sister, DeFrances Stoss Hess, one of the appellees [collectively called Hess]. Two months before the deed was executed the mother had sold another parcel of land to a third party. Because Schepp had somehow acquired nearly all of the proceeds from the consummated sale and the mother wished to avoid an uneven division of her property between the two daughters, the remainder was deeded to Hess.
A year later Schepp, with her mother’s consent, became conservator of her estate. Less than two weeks after her appointment Schepp instituted this suit for cancellation of the deed based on mutual mistake.3 She sought to prove that her mother had conveyed the remainder interest to Hess under the mistaken belief Schepp had appropriated to her own use all the proceeds from the earlier land sale.
After a bench trial the court found that (a) the mother had executed the deed by mistake, but (b) the evidence was “unclear” on the issue whether Hess knew anything about Schepp’s possession of the money derived from the sold land. The court concluded the mother wanted the daughters to share equally in her property and had executed the deed in the mistaken belief that Schepp had intended to keep the funds for her own use.4
The deed was cancelled by the trial court’s May 22, 1986 decree and Hess moved for “reconsideration” on June 6, 1986. After an evidentiary hearing the court vacated its earlier decision and denied the cancellation relief sought by Schepp’s petition, declaring in its new September 30, 1986 decree that the mother’s conveyance “shall remain in full force and effect.” Ten days later Schepp filed a motion for new trial. Before it was ruled upon, but [37]*37within thirty days of the new decree, she lodged this appeal.
The Court of Appeals reversed the September 30 decree; it held that, because Hess’ June 6, 1986 motion to reconsider— filed after ten but within thirty days of the May 22, 1986 decision — was rested on grounds other than those afforded by 12 O.S.1981 § 1081,5 the motion was ineffective to invoke the trial court’s term-time vacation power under 12 O.S.1981 § 1031.1.6 The appellate court relied upon our pronouncement in Minnesota Mining & Manufacturing Co. v. Smith.7 There, this court is perceived8 to have held that a “motion to reconsider” filed after ten but within thirty days of the trial court’s terminal decision must be based upon grounds prescribed in § 1031 which are different from those that could have been invoked in a timely new-trial motion under 12 O.S.1981 §§ 651 and 653;9 failing this, Minnesota appears to have reasoned, the trial court is powerless to change its decision, and the term-time motion must be condemned as but an untimely and hence fatally defective quest for a new trial. We now grant cer-tiorari to revisit Minnesota and affirm the trial court’s September 30 disposition on the merits.
I.
HESS’ “MOTION TO RECONSIDER” INVOKED THE TRIAL COURT’S “TERM-TIME” POWER TO VACATE THE INITIAL DECREE AND TO RENDER ANOTHER ONE IN ITS PLACE
Deeply rooted in the common law is the concept that trial courts retain for a limited period plenary control over their terminal decisions. This power was historically invocable at any time during the term of court in which the judgment was ren[38]*38dered; the authority hence came to be known as “term-time.” Although terms of court have been abolished in Oklahoma,10 the common-law term-time power survived and came to be codified in 12 O.S.1981 § 1031.1;11 the time limit for invoking this ancient control is now fixed at thirty days from the decision. Once timely invoked, the trial court’s term-time power may be exercised after the thirty-day period.12
The common-law term-time authority, now statutorily reconfirmed by the terms of § 1031.1, remains undiminished and may not be abridged by case law. The power so reposed in the trial bench is entirely unrestricted either by the §§ 651,13 1031 or any other statutory grounds.14 Neither the terms of § 1031.1 nor those of its common-law antecedents restrict the exercise of term-time •power to any specific grounds.15
Trial judges enjoy plenary term-time control with “a very wide and extend-ed discretion”16 that has been described as “almost unlimited.”17 While the power to entertain a new-trial motion is limited to § 651 grounds, the § 1031.1 term-time power is coextensive with the common law and hence remains unfettered by statutory grounds. Minnesota stands alone in our jurisprudence as a restriction upon the power now codified in § 1031.1.18
To the extent Minnesota holds that a term-time pursuit for relief, filed more than ten but within thirty days following a judgment’s rendition, is ineffective to invoke the trial court’s § 1031.1 control unless the motion be based on a § 1031 ground which was unavailable for timely inclusion in a new-trial motion and not invoke any § 651 grounds which could have been pressed by a timely new-trial motion, our pronouncement in that case may no longer be treated as a correct exposition of Oklahoma’s declared common law.19 Today’s departure from Minnesota’s restric[39]*39tive teaching about the range of grounds available to a § 1031.1 movant who invokes the term-time power more than ten days after judgment shall apply prospectively to this case, all appellate and certiorari cases in progress and to all future cases in which judgment shall have been rendered after the mandate’s issuance in this cause.20
The common law’s test in force in this state for measuring the legal correctness of a trial court’s response to a timely § 1031.1 plea is whether sound discretion was exercised upon sufficient came shown21 to vacate, modify, open or correct the earlier decision, or to refuse the relief sought.22 This is the test we apply in this case.
II.
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OPALA, Vice Chief Justice.
The dispositive issues are: 1) Did the trial court have the authority to vacate its decree and to pronounce a new decision on the merits in response to a timely term-time “motion to reconsider” rested on grounds different from those prescribed by 12 O.S.1981 § 10311 as well.as on grounds [36]*36which may have been available to the mov-ant under 12 O.S.1981 § 651, which motion was filed more than ten but within thirty days of the decree’s rendition?2 and 2) If so, does the trial court’s order of vacation that is combined with its new decree on the merits manifest an exercise of sound discretion in that the decision rests on a sufficient cause? We answer both questions in the affirmative.
Appellant, Mildred L. Schepp [Schepp], as conservator for Vaney Bell Stoss’ [her mother’s] estate, sued to cancel a deed by which the mother — reserving in herself a life estate — conveyed the remainder to Schepp’s sister, DeFrances Stoss Hess, one of the appellees [collectively called Hess]. Two months before the deed was executed the mother had sold another parcel of land to a third party. Because Schepp had somehow acquired nearly all of the proceeds from the consummated sale and the mother wished to avoid an uneven division of her property between the two daughters, the remainder was deeded to Hess.
A year later Schepp, with her mother’s consent, became conservator of her estate. Less than two weeks after her appointment Schepp instituted this suit for cancellation of the deed based on mutual mistake.3 She sought to prove that her mother had conveyed the remainder interest to Hess under the mistaken belief Schepp had appropriated to her own use all the proceeds from the earlier land sale.
After a bench trial the court found that (a) the mother had executed the deed by mistake, but (b) the evidence was “unclear” on the issue whether Hess knew anything about Schepp’s possession of the money derived from the sold land. The court concluded the mother wanted the daughters to share equally in her property and had executed the deed in the mistaken belief that Schepp had intended to keep the funds for her own use.4
The deed was cancelled by the trial court’s May 22, 1986 decree and Hess moved for “reconsideration” on June 6, 1986. After an evidentiary hearing the court vacated its earlier decision and denied the cancellation relief sought by Schepp’s petition, declaring in its new September 30, 1986 decree that the mother’s conveyance “shall remain in full force and effect.” Ten days later Schepp filed a motion for new trial. Before it was ruled upon, but [37]*37within thirty days of the new decree, she lodged this appeal.
The Court of Appeals reversed the September 30 decree; it held that, because Hess’ June 6, 1986 motion to reconsider— filed after ten but within thirty days of the May 22, 1986 decision — was rested on grounds other than those afforded by 12 O.S.1981 § 1081,5 the motion was ineffective to invoke the trial court’s term-time vacation power under 12 O.S.1981 § 1031.1.6 The appellate court relied upon our pronouncement in Minnesota Mining & Manufacturing Co. v. Smith.7 There, this court is perceived8 to have held that a “motion to reconsider” filed after ten but within thirty days of the trial court’s terminal decision must be based upon grounds prescribed in § 1031 which are different from those that could have been invoked in a timely new-trial motion under 12 O.S.1981 §§ 651 and 653;9 failing this, Minnesota appears to have reasoned, the trial court is powerless to change its decision, and the term-time motion must be condemned as but an untimely and hence fatally defective quest for a new trial. We now grant cer-tiorari to revisit Minnesota and affirm the trial court’s September 30 disposition on the merits.
I.
HESS’ “MOTION TO RECONSIDER” INVOKED THE TRIAL COURT’S “TERM-TIME” POWER TO VACATE THE INITIAL DECREE AND TO RENDER ANOTHER ONE IN ITS PLACE
Deeply rooted in the common law is the concept that trial courts retain for a limited period plenary control over their terminal decisions. This power was historically invocable at any time during the term of court in which the judgment was ren[38]*38dered; the authority hence came to be known as “term-time.” Although terms of court have been abolished in Oklahoma,10 the common-law term-time power survived and came to be codified in 12 O.S.1981 § 1031.1;11 the time limit for invoking this ancient control is now fixed at thirty days from the decision. Once timely invoked, the trial court’s term-time power may be exercised after the thirty-day period.12
The common-law term-time authority, now statutorily reconfirmed by the terms of § 1031.1, remains undiminished and may not be abridged by case law. The power so reposed in the trial bench is entirely unrestricted either by the §§ 651,13 1031 or any other statutory grounds.14 Neither the terms of § 1031.1 nor those of its common-law antecedents restrict the exercise of term-time •power to any specific grounds.15
Trial judges enjoy plenary term-time control with “a very wide and extend-ed discretion”16 that has been described as “almost unlimited.”17 While the power to entertain a new-trial motion is limited to § 651 grounds, the § 1031.1 term-time power is coextensive with the common law and hence remains unfettered by statutory grounds. Minnesota stands alone in our jurisprudence as a restriction upon the power now codified in § 1031.1.18
To the extent Minnesota holds that a term-time pursuit for relief, filed more than ten but within thirty days following a judgment’s rendition, is ineffective to invoke the trial court’s § 1031.1 control unless the motion be based on a § 1031 ground which was unavailable for timely inclusion in a new-trial motion and not invoke any § 651 grounds which could have been pressed by a timely new-trial motion, our pronouncement in that case may no longer be treated as a correct exposition of Oklahoma’s declared common law.19 Today’s departure from Minnesota’s restric[39]*39tive teaching about the range of grounds available to a § 1031.1 movant who invokes the term-time power more than ten days after judgment shall apply prospectively to this case, all appellate and certiorari cases in progress and to all future cases in which judgment shall have been rendered after the mandate’s issuance in this cause.20
The common law’s test in force in this state for measuring the legal correctness of a trial court’s response to a timely § 1031.1 plea is whether sound discretion was exercised upon sufficient came shown21 to vacate, modify, open or correct the earlier decision, or to refuse the relief sought.22 This is the test we apply in this case.
II.
THE TRIAL COURT EXERCISED SOUND DISCRETION WHEN IT RENDERED THE VACATION ORDER
Schepp argues that because the original decree is free from legal error and supported by the evidence, the trial court lacked sufficient cause to vacate it. We disagree for two reasons: 1) by vacating the first decision the chancellor corrected a misperception about the proper application of his equitable powers and in so doing cured an error of law and 2) the newly-discovered evidence considered at the postde-cree hearing supports the trial court’s new decision on the merits.23
A.
In the suit to cancel the deed the court found 1) Schepp’s mother had executed the instrument in the mistaken belief that Schepp had appropriated to her own use the proceeds from the mother’s land sale and 2) the evidence did not support.the requisite mutual mistake element.24
A deed may be cancelled for mutual mis[40]*40take25 or for unilateral mistake if fraudulent or inequitable conduct by the other party is shown.26 Because the chancellor initially rested his decree on but a unilateral mistake, his initial findings were, as a matter of law, insufficient as a basis for cancellation relief.
Sufficient cause for vacating a decree under § 1031.1 certainly includes curing errors of law that are fatal to the movant’s interest in the outcome of litigation. We therefore hold that the trial court’s vacation of the cancellation decree is not reversible. This is so because the earlier decision’s findings did not support the relief then granted.
B.
At the hearing on Hess’ motion to reconsider the trial court heard additional evidence. According to the testimony, after Schepp had acquired the proceeds from the mother’s land sale, she deposited them in a personal bank account in Schepp’s name alone. Schepp also withdrew $10,-000.00 as a business “loan.” About a year later, after Schepp had become conservator, she repaid the borrowed sum and placed it, along with nearly all of the other money, in an account opened expressly for the mother’s benefit. This evidence, which shows the degree of Schepp’s earlier control over and use of the funds, doubtless convinced the chancellor ultimately that the deed had been executed neither by a mutual nor by a unilateral mistake. We conclude the new evidence provides another legally sound basis for vacating the original decree and denying Schepp the relief of cancellation. In sum, it cannot be said that the trial court acted upon an insufficient cause when responding to Hess’ term-time plea for relief.
C.
Lastly, Schepp urges that by having considered the additional evidence when hearing Hess’ motion to reconsider, the trial court in effect held an impermissible new trial. Evidentiary hearings on term-time motions do not stand interdicted by case law.27 Absent any complaint from either party, Hess’ term-time motion was heard in conjunction with Schepp’s annual accounting as conservator. At the hearing newly-discovered documentary evidence as well as additional testimony were admitted without objection to the trial court’s use of this evidence in deciding Hess’ “reconsideration” quest. The documents were obtained via a postdecree order compelling their production.28 Because Schepp failed timely to object, she waived any errors in all those rulings, if any indeed there were.
III.
HESS’ RENEWED QUEST FOR DISMISSAL OF SCHEPP’S APPEAL MUST FAIL
Hess previously had moved to dismiss the appeal now before us on certiorari review, arguing that Schepp failed to preserve any error. Hess contended that while Schepp’s new-trial motion was timely filed below, it did not allege, with the requi[41]*41site particularity, any of the errors raised on her appeal. This court denied Hess’ motion on January 13, 1987. In her brief on the merits of the appeal she reurged to the Court of Appeals her earlier grounds for dismissal.
A motion for new trial, which is too vague and general to apprise the trial court meaningfully of the reasons for seeking relief, is not effective to preserve for review any allegations of error.29 Schepp’s October 10,1986 new-trial motion rested on the sole ground that “the verdict, report or decision is not sustained by sufficient evidence, or is contrary to law.” Its nonspecific allegations plainly condemn the motion as fatally defective to secure corrective relief upon her main contention that Hess’ quest for “reconsideration” was in law but an untimely and ineffective new-trial motion.
By a court order contained in the appellate record, the trial judge denied Schepp’s new-trial motion on October 30; she had timely filed her petition-in-error on October 29. The latter date is within 30 days of the September 30 decree now under review. Jurisdiction of this appeal was hence timely invoked.30 We unmistakably so held by the terms of our January 13, 1987 order which denied Hess’ dismissal motion.31
This court is not required to consider a renewed dismissal quest based on grounds identical to those on which a prior unsuccessful dismissal effort came to be rested.32 Hess’ motion to dismiss, reurged in her brief on appeal, presents no compelling reasons and fails to tender an argument different from that already submitted in her earlier attempt to bring about this appeal’s demise. We hence decline to disturb our prior denial of Hess’ dismissal request. On this record Schepp clearly is entitled to the benefit of our previous ruling and cannot be barred from corrective relief by her inefficacious new-trial motion’s pendency at the time her petition-in-error was brought in this court.33
COURT OF APPEALS’ OPINION IS VACATED AND THE TRIAL COURT’S DECREE DENYING CANCELLATION RELIEF TO THE PLAINTIFF IS AFFIRMED.
SIMMS, DOOLIN, KAUGER and SUMMERS, JJ., concur.
ALMA WILSON, J., concurs specially.
HARGRAVE, C.J., and HODGES and LAVENDER, JJ., dissent.