CSV updates to existing journal entries caused over 3700 invoices to be unapplied from their payments. NetSuite applied random journal entries to these payments. Is there a solution that can reapply these invoices along with credits?

I think you can do an edit import to either the credit or invoice to apply things back against each other. But you'd need to know which applies to which first.

I can do this but the payment has been marked deposited in a bank account. That's why I need to apply specific credits to the payment itself (credit memo or journal entry)