¶1David Peebles, Peebles, Rogers Hamilton & Skekloff, Ft. Wayne, Ind., for appellant.
¶2Ward W. Miller, Bloom, Bloom, More & Miller, Ft. Wayne, Ind., for appellee.
¶3Before BAUER, Chief Judge, CUDAHY and POSNER, Circuit Judges.
¶5The question presented in this appeal is whether the bankruptcy court erred in permitting a post-trial amendment of a pretrial order. We conclude that the bankruptcy court did not abuse its discretion in amending the order.
¶6I.
¶7In October 1977, Hannah Delagrange (the “debtor”) transferred her home to her daughter, Judith McKinley, in exchange for *230a life estate in the property and McKinley’s oral promise that she and her husband would take care of Delagrange for the rest of her life. Delagrange claimed that the conveyance of her home was also in exchange for her daughter’s work in the Delagrange family enterprises.1 McKinley sold the properly to two bona fide purchasers for $58,900.00. After paying off the mortgage, the sale netted $38,020.53. McKinley borrowed $2,000 from a financial institution to be used as a down payment on a more modest home for her mother; McKinley characterized the $2,000 as a loan to her mother, but she apparently did not anticipate recouping the money.
¶8At the time of the conveyance, Delagrange was heavily in debt and had only modest assets.2 In May 1977, Peoples Trust Bank filed a complaint against Delagrange, her son and Delagrange Builders based on a promissory note in the amount of $13,716.49. On August 23, 1977, First Federal Savings and Loan Association of Fort Wayne filed a complaint to foreclose on a piece of commercial property owned by Delagrange after she defaulted on her mortgage payments; the bank obtained a foreclosure judgment on April 10, 1978. Delagrange was also, at the time of the conveyance, a personal guarantor of Delagrange Builders for loans in the amount of $8,000 from Fort Wayne National Bank and $49,000 from Lincoln National Bank. A few weeks after the conveyance in question, Lincoln National Bank filed a complaint on its note. In addition, Delagrange owed $8,800 to Grabill Bank at the time she transferred her home to her daughter.
¶9Delagrange filed for bankruptcy on December 10,1979. On February 6,1980, the trustee in bankruptcy filed suit in bankruptcy court against Delagrange and her daughter to void the debtor’s transfer of her home, contending that she transferred her property while insolvent for less than fair consideration in fraud of her creditors. Delagrange’s defense was that she was not insolvent at the time she sold her home and that she received adequate consideration in exchange.
¶10In the complaint and pretrial order, the trustee relied exclusively on section 544(a) of the Bankruptcy Code.3 The defendants indicated in the pretrial order that they would oppose any attempt by the trustee to change the theory of his case from that set out in the complaint and pretrial order. The trustee filed his trial brief on November 4, 1980, two days before trial, and indicated for the first time that he would be relying on section 544(b)4 in addition to section 544(a) as a basis of recovery. The defendants immediately filed an objection to the addition of section 544(b), requesting *231either that they be granted a continuance to give them an opportunity to respond to this new theory or that the trustee limit the theory of his case to section 544(a). A hearing was held on this motion on November 5, 1980. The court asked the trustee whether he could establish a claim under section 544(a), and after receiving an affirmative answer, the bankruptcy judge denied the request for a continuance and ordered the trustee to proceed solely under section 544(a).
¶11The trial was then held on November 6, 1980. The bankruptcy court found in favor of the trustee under section 544(a), without specifying which subsection entitled the trustee to recover, and entered judgment accordingly on May 29, 1981. In re Delagrange, No. 79-10701, order (Bankr.N.D.Ind. May 28, 1981). The court denied a motion to alter or amend its judgment and reaffirmed its decision; the court, however, did indicate that its decision was based on subsection 544(a)(3). No. 79-10701, order (Bankr.N.D.Ind. July 26, 1983). The defendants appealed to the District Court for the Northern District of Indiana.
¶12On appeal before the district court, the defendants contended that the bankruptcy court’s decision could not be sustained under any of the provisions of section 544(a). The defendants further argued that the decision could not be affirmed on the basis of section 544(b) because the trustee disclaimed reliance on that legal theory. The trustee, on the other hand, defended the bankruptcy court’s decision on the basis of sections 544(a)(1), 544(a)(3) and 544(b).
¶13The district court reversed the bankruptcy court’s decision because the facts did not support recovery under section 544(a)(3). No. 83-280, order (N.D.Ind. June 29, 1984). The district court also held, however, that the case should be remanded for further consideration. The court noted that although the bankruptcy court relied exclusively on section 544(a)(3), alternative theories on which relief could be granted were proposed at various points in the proceedings. The complaint and pretrial order indicated that the trustee was relying on section 544(a) in general and not exclusively on section 544(a)(3). The district court also noted that in their post-hearing memoranda the parties briefed the applicability of sections 544(a)(1), 544(a)(3) and 544(b). The bankruptcy court was thus directed to consider the other potential bases of relief on remand. The district court specifically ordered the bankruptcy court to consider amending the pretrial order to provide for recovery under section 544(b). Upon defendants’ motion to alter or amend its judgment, this decision was reaffirmed. No. 83-280, order (N.D.Ind. March 8, 1985).
¶14In response to the defendants’ contention that the trustee could not recover under section 544(b) because he agreed to proceed to trial only under section 544(a), the court noted that an attorney’s inadvertence should not preclude a case from being decided on the merits. Id. at 2. The court concluded that it was for the bankruptcy court to decide whether the section 544(b) claim could be considered on remand. To avoid unfair surprise, the district court, however, did order the bankruptcy court, if it considered section 544(b) on remand, to permit the defendants to present evidence on that theory. Id.
¶15The parties entered into a stipulation on remand in the bankruptcy court that neither party would introduce additional evidence and that, if the case was retried under section 544(b), the bankruptcy court’s former findings of facts, except for the amount of the recovery, would stand as written. The parties also stipulated that the trustee could not, as a matter of law, recover under section 544(a)(1). Stipulations (filed July 9, 1985). The trustee filed a brief in support of amending the pretrial order and in support of its position on the section 544(b) claim. The defendants did not file a brief. The bankruptcy court found in favor of the trustee on the basis of section 544(b) and awarded title to the property purchased by McKinley to the trustee together with money damages. No. 79-10701, order (Bankr.N.D.Ind. April 24, 1986). This decision was affirmed by the district court, 65 B.R. 97 (N.D.Ind. 1986). The defendants now appeal to this court.
¶17The appellants concede that the transfer by Delagrange to her daughter was a fraudulent conveyance. Appellants’ Brief at 5-6. The question presented on appeal is whether the bankruptcy court could consider amending the pretrial order to include a claim under section 544(b) after the trustee agreed to proceed solely under section 544(a).
¶18Contrary to the appellants’ position, the trustee’s initial disclaimer of reliance on section 544(b) does not irretrievably preclude the bankruptcy court from amending the pretrial order on remand to add a claim under section 544(b). Under Rule 16(e), the pretrial order can be “modified only to prevent manifest injustice.” Fed.R.Civ.P. 16(e).5 To decide whether to permit amendment of the pretrial order, the court must
weigh[] the possible hardships imposed on the respective parties by allowing or refusing to allow the order to be modified; the court must also balance the need for doing justice on the merits between the parties (in spite of the errors and oversights of their attorneys) against the need for maintaining orderly and efficient procedural arrangements.
¶193 J. Moore, Moore’s Federdl Practice H 16.20, at 16-79 to 16-80 (2d ed. 1985). The disclaimer is simply one factor to be considered.6
¶20The trustee’s initial failure to make a section 544(b) claim was not due to any willfulness or bad faith on his part. See United States v. First Nat’l Bank, 652 F.2d 882, 887 (9th Cir.1981). The trustee claims that the omission of a cause of action under section 544(b) in his complaint and pretrial order was due to a typographical error. This explanation seems plausible because both documents allege facts and raise issues relevant to a fraudulent conveyance claim under section 544(b). The appellants do not contest the trustee’s explanation for the omission; in fact the parties stipulated on remand before the bankruptcy court that “there was no willfulness or bad faith on the part of the trustee with the inclusion of ‘544(a)’ in the original complaint and trial order.” Stipulations.
¶21When the trustee realized his error originally, he attempted in his trial brief to add a claim under section 544(b). The appellants immediately objected to the inclusion of this “new” cause of action and requested either that the trustee drop this claim or that the bankruptcy court grant a continuance to give them time to prepare a defense. At the hearing held on this motion, the bankruptcy judge asked the trustee whether he could prove a claim under section 544(a). When the trustee answered in the affirmative, the judge indicated that the trial would be held as scheduled, and the trustee would be limited to section 544(a). Appellants’ Brief at 3.
¶22Under the appellants’ own version of the events at the November 5 hearing, it is not clear to us that the trustee in fact disclaimed reliance on section 544(b). Apparently, the trustee did not tell the bankruptcy judge that he would prefer to forego his claim under section 544(b) rather than have the trial delayed. Rather, as the appellants relate the facts, the bankruptcy court decided that the trial would proceed immediately under section 544(a) because the trustee thought he could prove a claim *233under that section; it is not clear that the bankruptcy court actually put the choice to the trustee. Thus, the trustee may never have affirmatively relinquished his right to raise a claim under section 544(b).
¶23Unfortunately, we do not know exactly what transpired at the November 5 hearing. Neither a transcript of proceedings nor any order resulting from that hearing has been included in the record on appeal. However, even if the trustee did inform the bankruptcy court that he would rather drop his claim under section 544(b) than delay the trial, we do not think that this circumstance by itself precludes the bankruptcy court from amending the pretrial order on remand to include this cause of action. Other factors to be considered in granting or denying amendment include the prejudice to the trustee and to the defendants resulting from the decision as well as the burden placed on the court by the pursuit of a new cause of action.
¶24The equities in this case weigh heavily in favor of the trustee. The trustee, and the creditors he represents, would obviously be prejudiced if the bankruptcy court refused to modify the pretrial order. The trustee would be barred by res judicata from bringing a new suit based on section 544(b), and the creditors are apparently time-barred from bringing a suit in their own right. Thus, neither the trustee nor the creditors could upset a transfer that is concededly a fraudulent conveyance.
¶25The appellants, on the other hand, were not prejudiced in any legally relevant sense by the court’s amendment of the pretrial order to include a claim under section 544(b). The bankruptcy court gave the appellants an opportunity to present further evidence on the section 544(b) claim, in effect granting their earlier motion for a continuance.7 Delagrange and McKinley, however, chose not to present any further evidence and did not even think it worth their while to submit a brief to the bankruptcy court.8 Thus, the appellants cannot seriously argue that they were prejudiced by the bankruptcy court’s consideration of the trustee’s claim under section 544(b).9
¶26Another factor that weighs in favor of upholding the amendment of the pretrial order is the minimal impact the modification had on the administration of this case. See First Nat’l Bank, 652 F.2d at 887. The parties stipulated on remand that “[i]f the case were tried or retried under 11 U.S.C. § 544(b), the Court’s fact findings would be identical to those (except for the amount of recovery) contained in its May 28,1981, order.” Both sides also stipulated that they would not present any further factual evidence. Thus, the bankruptcy court merely had to consider in light of the *234new cause of action the evidence previously submitted.
¶27The amendment of the pretrial order in this case was necessary “to prevent manifest injustice.” The decision of the district court is, therefore,
¶28Affirmed.