Fails to add an attendee into a single instance of a recurring meeting
Exchange 2010 with Evolotion 3.32.1-2 (Ubuntu 19.04)
I create a recurring calendar ever, invite attendees and save. Then a day later i tried to edit the series and add more attendees and saving the event. This is the error I get:
Cannot modify calendar object: The send or update operation could not be performed because the change key passed in the request does not match the current change key for the item.