That was our problem, if my partner stayed and worked on charts after I would sync to go home we were missing charts. We did not realize this was happening until one day it happened in reverse. We just though she was screwing up the computers again- a recurring joke in the office. One evening I stayed late, did several charts, and the next day they were gone. I realized that when she did the sync and left then returned the next morning that she wiped out my charts. We now use log me in (free)on suggestion of Bert. We have not lost any charts since doing this change. We keep a list of the charts we see until the next morning and then just pull up the names to make sure the charts are still there. The lost charts must have something to do with the way the system transfers the data base and then backs up. I am by no means a computer guru but I know this was our problem. Stop using sync and see if this helps. Please post your outcomes and hopefully tech support can fix this in an update.