Using Classic Outlook on Windows for personal email, calendar, and contact management
Ashley,
A service fix for a bug that caused the organizers copy of the meeting to get deleted has been fixed in the service as of service build 15.20.7844.000. This build is now at all of the standard production tenants as of mid-August 2024. The only tenants that are not yet fixed for ITAR GCC/GCCH/DOD and those tenant types and should have the fix in the next couple weeks.
My peer that works on calendar says that it is possible for meetings created before the fix could still hit the bug. New meetings created today should not hit that bug. From tenants that were escalated with the bug so far, the feedback is good, and the fix is working. It's possible there is another bug, so we need to keep investigating. If you see this issue again, please ask your tenant admin to open a support ticket.