Known Issue: Remote "Shoot Schedule" Calendars on iPhone Don't Update Automatically
A customer reported an issue where their "shoot schedule" from TourBuzz wasn't being updated. Apparently the issue turns out to be that if you have a calendar in iCal that's added as a "remote" calendar, the calendar will sync to the iPhone but it won't update automatically.
The workaround is to subscribe to the remote calendar directly from the iPhone.