Prevent unreconciling AP payments in closed periods

Right now, we have an issue where an AP payment leaves the bank in say August and sometimes because they are international payments they bounce back in late September after the period has closed. Oracle automatically unreconciles using the original bank date, which changes our historical bank rec, that has already been signed off on. We're wondering if there's a way to prevent that, where it unreconciles in the current period instead.