We have a client who is observing some sporadic syncing issues with their contacts which is being populated by GalCache.  There are other devices in his possession that appear to be working ok, however, z10's are consistently causing an issue.

The behavior we are seeing is that contacts will appear one day and they will be gone the next, however, they will remain on other devices.  I tend to think this is due to an implementation of BB's ActiveSync, however, I wanted to see if anyone has observed similar behaviour.

Thank you.