Parked PO's prior to 09/30/13 and Posted after 11/01/13

I have several PO's that were parked prior to 09/30/13. The PO's were posted after 10/01/13 -

FMIOI derived the correct year Fund but the purchase order that was created in the prior year kept the original D13 on the account assignment tab.

If I make a significant manual change on the PO the Fund on the account assignment tab will derive  to the correct FY.

I would like to see the PO Fund on the account assignment tab be updated once I post these orders - It should derive and update the PO but it doesn't. The funding on the PO is 09/30/2013 Funds.

Has anyone see this issue ?

Please advise.

Thank you.