I've discovered that calendar items created by Mac/Entourage users are not restoring properly. Here is whats happening: Calendars are full of items visible via OWA. I perform a restore of the information store from recent backup and exmerge the same users calendar. The exmerge'd calendar is either completely blank or only has a few items in it. For comparison, I exmerge the current live calendar and see that the .pst file size is about the same as the .pst that came out of the restore. So it appears that the data is probably there, but for whatever reason its not showing up. Again this is only happening with Entourage users and I've verified the problem on two exchange servers in our organization, so its not server specific. I'm stumpted and not sure what to do next for two problems: how to restore data for a users calendar that has suddenly gone blank how to fix this so the data is backed up correctly. Has anyone seen this before? Thanks!