Consigned inventory supplier with incorrect supplier site PAY ON code.

We have a consigned inventory vendor  whose supplier site PAY ON indicator was changed for a from USE to RECEIPT. The error was not caught for weeks until the vendor called.  No invoices had been created since the PAY ON indicator was switched.  After the error was caught, the supplier site was changed back to USE. We ran the Pay On Receipt AutoInvoice program but the only invoices generated were new created orders.  Any ideas how to get the backlog of invoices created?
Will this require a datafix?