Just throwing this out there in case someone else had a client enter the Twilight Zone once. Client has a chunk of invoices missing from Open Invoices in AP for just one vendor. It was Aug-Oct. If you go to Invoice History Inquiry, the invoices are there with a 0 balance. NO payments. Had an invoice total. Posted to GL. But even with the check box for viewing 0 balance invoices, does not show up on the Invoices tab. (And they really are open invoices, still needing to be paid.)
Only happened to one vendor. Working fine since Nov.