My tasks are tripled since iCal synchronization
 

Hi folks,
I'm still fighting with iCal synchronization. I would need to sart from scratch IMHO but cannot find a way to do it. The current situation is that I have all tasks in OF 3 times, some of them without any context. I tried to remove the whole ~/Library/Calendars but after restart iCal said "Upgrading calendars" and all my data are back in place!
I would like to find a way to erase all data from iCal and export everything from OF and start from scratch