I would check the exported file. They can be a bit hard to read but once exported, if the info was there in AC, the info should be in that file. Check there first to make sure your billing software is not skipping that field.
FYI- I liked EZClaim at first but it was a burden in the end and did not work well for our office. I liked that we could import from AC but to be honest, it was difficult to manage patients, payments, and many other things. Many people like it though, so I can't completely discourage the use of it.
