Hello
I just started testing grommunio. I get a lot of meeting invitations from Office365 and Outlook.com. Once I have accepted an invitation, the organizers may often change the time or cancel it altogether, at which point I receive notification that the appointment has been changed. If the event is a single one, then there are no problems, but in most cases the events are repeated, for example every week at the same time. Often the organizer wants to change the event in their Outlook.com, in which case I get a duplicate event. If it deletes an event then it cannot be deleted automatically from my calendar. For example

Because of this problem, using the grommunio calendar to schedule meetings is completely impossible. Most companies use Office365, Outlook.com or Exchange to send a meeting invitation to their partners. By the way, it seems to be a problem in Kopano, too
https://forum.kopano.io/topic/4014/unable-update-a-single-event-in-a-recurring-series
What do you think of this problem? Thank you