Hello! After updating the ical2eas and eas2ical conversion paths and some of the SyncEvolution test cases, all of the eas_event source tests pass. However, there are some open questions/gaps: 1. removing Exceptions as part of an Update (aka removing a detached recurrence) is ignored by Exchange (BMC #22849) 2. support by Exchange for all-day events is poor (BMC #22780) 3. the ical2eas code only works if there is a parent event (BMC #22831) If anyone has some bright idea or suggestions how 1 and 2 can be solved, then I am all ears. The last one is a fairly obvious gap in the code, but first I need to check for the right way to represent detached recurrences without parent. -- Best Regards, Patrick Ohly The content of this message is my personal opinion only and although I am an employee of Intel, the statements I make here in no way represent Intel's position on the issue, nor am I authorized to speak on behalf of Intel on this matter.