Background: When exceptions are made to recurring events Outlook makes a separate exception appointment, but does not return that appointment in the /events API. Instead you're forced to query the...
Even more difficult are deletion exceptions. At least with modified instance you can see something when you look at instances.
With a deleted instance, as near as I can tell, you have to
- manually calculate a list of recurrences from the recurrence pattern
- fetch instance data
- compare the lists, looking for missing instances
Yikes!
It would be extremely helpful, in the recurring appointment, to have exception information:
- which instances have been deleted
- which instances have been altered