At month end (July 2013) closing of AP, I printed the AP Dist To GL report and the Receiving Accrual account was 490k (only off slightly from the IM Dist to GL report for this account). However, when it pulled/posted to the GL the amount was 460k. I narrowed the transactions to one voucher posting group entered 8/2/13 with distribution dates in July. The PO receipts came through IM normally, it appears the vouchers were posted in AP normally. How can I figure out what caused this so I can prevent it in the future? Has anyone seen this before?