How do you view and edit payments made via a journal entry? We did a write off years ago that it turns out our cusotmer paid us for. The invoice was paid for by the write off journal entry, but I cannot figure out how to see what the JE is applied to in order to edit it.

@Will Coburn - look at the Vendor record; under Transactions filter to see journals only. If you journal is not there then this journal is not applied to this vendor. To solve it edit the journal in questions with Name field updated for that Vendor

So the Journal is there, but when you click it it takes you to the journal entry, which only lists the credit entry for the customer; it does not allow you to reapply that credit against new or unapply it against existing entries

ops, Customer - same principal; was this credit ever applied to any transactions? you would have to do some investigating here. Sounds like it was from your description