Outlook SYNC help

Newbie here

OK, I am leaving Blackberry and moving to a new 3gs and I am syncing my Blackberry to Outlook and all works perfectly except only about 6-8 of my calendar entries are being moved to OutLook. It is like it does not see the other entries. I need them synced so I can move them to my new iPhone.

I know this is a iPhone Forum, but hoping that others that have "moved" have had the same problem and can help me resolve it!