Hi, DC,

Something in the setup must not be right. We haven't run into anything where this 'just happens'. Posting to prior year works well in GL9.

The problem of determining what isn't right is difficult sight unseen however. You'll need to get a copy of their data and investigate this more deeply.

It could be useful to get a copy of the pre-converted to GL9 data and check integrity, accounts and balances. Then convert the data to GL9 and do a small posting to prior year and track what happens.