Credit Memo stuck in Awaiting Billing

Due to specific customer return programs, customer is creating returns in the months of May, June, and July and generating Credit Memos in the month of August. All Credit Memos are stuck in Awaiting Billing.

All these returns are non-referenced returns.

Root Cause - Since there is no Shipping for returns, return sales order Ordered Date is defaulted in column Actual Ship Date (RA Interface Lines). Currently, we are changing this Actual Ship Date on Manage Autoinvoice lines ADFdi.

Expectation - There should be a provision to default return order Requested Date in Autoinvoice Actual Ship Date column.

Please suggest if there is any other workaround to change the Actual Ship Date on the RA Interface before triggering Autoinvoice.