Change of calendar issues

Hi
Two issues
I created an event in my Zulu calendar and then realised it should have been created in my standard Mac iCal colour. When I changed it I looked in the FMP demo file and could see no indication it was no longer real data. The delete flag was not set either. Can this action be detected at the FMP end or is this a limitation of iCal/Zulu?
I then changed the FMP item by 5 mins and up pops a new entry in my zulu colour in iCal. Interestingly the new item was 55 mins earlier. Surely it should have created an item only 5 mins displaced
Thanks
Crispin
Two issues
I created an event in my Zulu calendar and then realised it should have been created in my standard Mac iCal colour. When I changed it I looked in the FMP demo file and could see no indication it was no longer real data. The delete flag was not set either. Can this action be detected at the FMP end or is this a limitation of iCal/Zulu?
I then changed the FMP item by 5 mins and up pops a new entry in my zulu colour in iCal. Interestingly the new item was 55 mins earlier. Surely it should have created an item only 5 mins displaced
Thanks
Crispin