E1 Cash Receipts Import or Upload Multiple Standalone Chargebacks

Does anybody have a work around for importing multiple AR cash receipts standalone chargebacks? In Standard Receipts Entry we use the Remittance form exit to load bank wire invoice and chargeback information. However, some wire payments have 50+ standalone chargebacks (short ships, damaged material, price adjustments, returns, etc..). Within Standard Receipts Entry the cash receipts clerk uses Remittance to import matching invoices, then she has to manually do 50+ standalone chargebacks. This is very time consuming. One customer pays annually and they can have 200+ standalone chargebacks.

Any suggestions?