Mrji,
Hi, I'm reading your and Soma's posts and want to make sure I'm understanding. You had a paid payables transaction and voided the historical transaction using the Void Historical Payables Transactions window. The historical transaction was the payment. This moved the original invoice into the Open table. You then voided the open invoice using the Void Open Payables Transactions window. At this point, both the payment and the invoice should be in history and not included on your current payables trial balance.
Except, it is still on your payables trial balance. So, did the check (payment) void OK, but the Invoice doesn't appear to have voided? It looks like you tried to void it again using the Void Open Payables Transactions window, and it still isn't voided. If you look for the transaction in the payables inquiry window, it shows as being in the open table with no similarly numbered transaction in the history table. The first document you voided (the payment), does it show to be in the history table?
Are my facts right?
Kind regards,
Leslie