Cash Receipt to Individual Invoice Line

Has anyone found a way to apply cash receipts to an invoice line amount as opposed to an invoice. Our scenario is that we ship through EDI and do not send the customer an invoice. They pay off the packlist, line, reference (PO Number), and invoice date. Is there a way to do this without having to create an individual packlist for each sales order line?




[Non-text portions of this message have been removed]