Hi,
I have a mapi property on a mailitem in a users Sent Item folder that we are updating via an exchange web services call using the ExtendedPropertyDefinition. The update is successful but the updated value does not seem to get synced back down to outlook which is in cached mode. I can confirm that the update has happened by creating a new outlook profile and pulling the mail box down.
So I suspect it some kind of caching mode problem, may be by design . So the question is there away to force an update via EWS? or can some explain the caching rules as things like read un read seem to keep in sync.
Thanks
Marcus