or interest that has accepted or rejected the plan is deemed to have accepted or rejected, as the case may be, the plan as modified, unless, within the time fixed by the court, such holder changes the previous acceptance or rejection of the holder. 1194. Payments (a) Retention and distribution by trustee Payments and funds received by the trustee shall be retained by the trustee until confirmation or denial of confirmation of a plan. If a plan is confirmed, the trustee shall distribute any such payment in accordance with the plan. If a plan is not confirmed, the trustee shall return any such payments to the debtor after deducting— (1) any unpaid claim allowed under section 503(b) of this title