receipt application to AR transaction in the backdate

We have multiple receipts where the accounting date of applicaiton is in the current period i.e. April 2026. The accounting date is actually from both i.e. receipt reconciliation as well as AR transaction application. Now we have to unapply the AR transaction in the existing period, and re-apply the same transactions back in Dec-2025. While doing the same, system give us the error message that accounting date exist in April-2026