AndrewC (migrating to ohai)So the logic for davmail Tasks synchronisation with Exchange, when subscribed to a personal and a group calendar, seems to be:
1. client creates a task in personal calendar, and syncs it to the server
2. on the next sync, client receives a copy of the task, apparently in the group calendar!
3. but not really, server side. Whew!
4. removing either on the client removes "both", after more syncs.