Paid vouchers' pay status flag got set back to A

 Have you ever seen this happen? We were processing the last expense payment for an employee who has left us. Its pay status was set to A. It seemed as though after Create Payment Groups was run, all his prior expense payments since 2004 had their status flipped back from P to A. The open amount on them was still zero. The user ID, date updated, program id were not updated / not affected, so we can't tell what it was that touched this to cause it to flip back. a query was run to see if he was the