Transfer Paid Invoices to Another Vendor

SOLVED

We have two vendor cards that are for the same vendor, but used for different accounts. When reviewing, we found that some posted transactions had been put under the wrong vendor number. Is there any way to just transfer the invoice (even though it has been paid months ago) to the correct vendor number? If not, what is the best way to correct this so that each vendor has only transactions and invoices for their specific account?