Section 507C.29 - Claims of holders of void or voidable rights1. A claim of a creditor who has received or acquired a preference, lien, conveyance, transfer, assignment, or encumbrance, voidable under this chapter shall not be allowed unless the creditor surrenders the preference, lien, conveyance, transfer, assignment, or encumbrance. If the avoidance is effected by a proceeding in which a final judgment has been entered, the claim shall not be allowed unless the money is paid or the property is delivered to the liquidator within thirty days from the date of the entering of the final judgment. However, the court having jurisdiction over the liquidation may allow further time if there is an appeal or other continuation of the proceeding.2. A claim allowable under subsection 1 by reason of a voluntary or involuntary avoidance, preference, lien, conveyance, transfer, assignment, or encumbrance may be filed as an excused late filing under section 507C.35 if filed within thirty days from the date of the avoidance or within the further time allowed by the court under subsection 1.