How to handle the AP Abendant properties (i.e. suplier payments that never cashed?)

We are currently on EBS R12 and would like to know as how we should process our Abendant Properties(i.e. a supplier payment that was processed and mailed

but was never cashed or cleared from our fund?).

In Payable R12 it no longer allows us to change an old AP invoice and modify once a AP Period is closed. This means we can not go back and zero out our

AP invoices that are in closed month . We use to in 11i to go back and zero out the amount at line and header invoice level and make a JE for abendent properties to designated GL account.