I saw your thread transfered here. I had the same problem when I upgraded to the new OS but i didn't know there was a calender patch at the time. Tech support told me since that the patch was not installed the upgrade i did for the current OS, did not back up my calender. Went to restore and no calender was saved. The upgrade went fine but I had to redo everything in Calender again. I knew I should of sync to outlook but I don't use it since I had the blackberry haha.