Hi, Treasure,

I believe the current release of PO is 8.0A (August 6, 2008). You should be running a current version.

I'm not exactly certain of the steps you were taking but, when I enter an invoice/adjustment, PO seems to be sending the correct amount to AP. As well, if I enter a Quick Receipt to record a return and subsequently enter the invoice/adjustment to record the credit (assuming one was received) the appropriate amounts are being sent to AP.