I have just come across an issue between our Purchase Order module and our Payables module. 2 invoices from the same batch did not get retrieved to Payables. I have identified them, but don't know how to proceed. They equal the credit balance showing in my AP/PO Clearing account.

Do I re-enter them in Purchase Orders and hope they retrieve this time?
Do I enter them through Payables instead?
How will either of these affect my clearing account?
How do I ensure this doesn't happen again? Is there something that I should be checking when retrieving a batch from Purchase Orders?
HELP!!