Expenses Receipts change from Original to Imaged

Hi,

Currently we are using Original Receipts functionality for Expense Receipts, that means ER awaits at Audit level (HOLD_PENDING_RECEIPTS) until original receipts received from Users. Going forward Business wants to go with Imaged Receipts instead of Original, and so far we able to configure the change by defining receipt sets. Paperless working fine except one thing that while trying to import to AP(Expense Report Export) it import "Original Receipts" ER which raised before Imaged Receipts change and awaiting in AUDIT(HOLD_PENDING_RECEIPTS) to AP without originally receiving the receipts package. Is there anyway we can prevent it? Why Oracle is not applying original