Synchronising Calendar events between private and shared calendars

This problem occurs is when one client adds a event record to the shared calendar which is similar enough to an existing event in a non-shared calendar on another client. During synchronisation the event it moved from from the non-shared calendar to the shared calendar and removed from the private calendar. It has not been observed in 10.6. The following scenario describes the problem in detail.

Environment Setup:

• client A with Calender "A" + "B"
• client B with Calender "B" + "A" + "C"

Calenders "A" and B" are syncronised on both clients.

In calendar “C” an event is added on client B. On client A a similar event is added to calendar “A”. After synchronisation the original event in calender “C” on client “B” has moved from calender “C” to calender “A”. The original event is no more in calender “C”. A bug report as been raised with apple for this issue. Bug Report number : 7111460  

This issue has been acknowledged as a know issue by Apple under Bug ID# 6009783