08-31-2010, 04:33 PM
Join Date: Jul 2005
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Do you have anything (facebook, google . . . ) altering your calendar, anything except either what you do yourself manually on the blackberry or in Outlook?
Check your default calendar in device options. Make sure it is what you want, but more importantly, check the setting so you know what it is. If you have multiple calendars (i.e. you have multiple email addresses), the one that is set as default is the one that sync's with Outlook.
When you have this trouble with mass deletions again, cancel out and then check your default calendar and see if it is still the same, or if it has changed. If it has changed, change it back, and then sync again. I can't explain why it has changed, but if it has and you change it back, then I think you won't see the mass deltions issue.