| | I have the Same issue!!
I have a BB 8800. On Sunday I went to go back in my calendar in outlook to look something up and found that everything older than 60 days was gone. And each day when the BB wants to sync, it wants to delete the appointments from 60 days ago. Example (it wants to delete June 21st appointments today)
Does not matter what the Desktop software is set for. Keep all schedule appointments, or keep 365 days prior and 365 days ahead- does not matter. Each day it wants to delete 60 days prior in my Outlook. I have since turned off Calendar sync for now until I figure out what is happening - can't afford to lose any more calendar data.
Any thoughts? My 8800 says its using the 4.2 software and when I go on the device under Calendar/Options - there is no setting for Keep Appointments like other versions of BBs have.