check that you have the calendar preferences set correctly.
The iCal sync should be a two way street
I have a 64GB 4th gen iPod Touch running iOS4.2.1 and a Mac Pro running OS 10.6.6.
When I enter events in Calendar on the iPod and then connect to the Mac, instead of transferring those events to iCal on the Mac, the events disappear from the iPod. How can I sync the two calendars and not lose events?