Apparently you didn't read my message -- I have tried deleting and re-entering the invoice -- does not work. I don't have hours to go through the other "fixes" offered here. It's simpler to rely on the AIA documents and excel to correctly track project totals. QB is expensive - it should work. This is a re-occurring issue. I've seen it more than once at more than one company that I have worked with. Simply put - QB is faulty and it needs to fix the problem.
