Hi Valerie
As per my email - thanks for sending your data. This helped to find the source of the problem. I am posting it here so others may benefit from this information.
The reason the Open Payables report was printing Vendors with 'zero' balances was because even though these Vendors had a net balance of zero - the transactions that made up that balance were not in fact matching transactions.
In this case, all the Vendors listed on the report except for one, had both invoices and offsetting adjustments posted, but the adjustments were not applied to those specific invoices, so even though the amounts matched, the transactions did not 'match up' in the system, thus the report listed them appropriately. Even running Period End would not clear these transactions out of the system, because as far as the system goes, they are separate transactions if not applied correctly.
In one instance, there were actually credit invoices entered to seemingly offset the original invoices - the end result is the same.
Once adjustments were entered and correctly applied against these invoices (and the incorrectly entered adjustments), the Vendors did not show up on the Open Payables Report.
ACCPAC Plus A/P works in the same way and lists all these Vendors with a 'net' zero balance with unmatched applied details.
It is debatable whether or not the Open Payables report should print these types of transactions or not - if you think it should work differently, then please feel free to enter a suggestion to this effect. As it stands, I would see this as a warning device, to let you know that transactions were not correctly applied, but not everyone may see it this way.
Take care,