Incorrect commitment relieved during purchase order receipt posting

Hello,

in some cases, when the system posts the order receipt, it relieves incorrect quantity and amount from PU and PA ledgers. Right now I have three cases in our system and I can say that:

1. It happens when the order was partially received before

2. In two cases the previous receipt was partially vouchered but in last case it was vouchered fully (also if I retest for one order with partially vouchered previous receipt, the issue was not duplicated), so it seems it doesn't have affect on the issue.

The system doesn't relieve received quantity and amount, but it relieves minus total received quantity from all previous receipts and minus total received amount from all previous receipts. So in the end the relieved quantity and relieved amount is zero.