AC overwrites information into exisiting EZ accounts. EZ blames AC, AC doesn't fix it or confirm or deny it's their issue. It renders the system almost worthless because the time involved constantly updating demos and Dx codes in EZ that were alreasy there. We have to review demos every single time we bill out a patient as well as add the Dx codes. I can't understand why it wasn't fixed with the last update. It wasn't a problem until the update prior to 3.6.18