Using Classic Outlook on Windows for personal email, calendar, and contact management
I can totally relate to this. I tried to switch to new version due to some trouble with using old outlook, but this problem with meetings is a total dealbreaker.
I will have to switch from Teams to Zoom or Google Meet unless this is fixed, as I am doing the same as you. Organizing large meetings where I add or remove participants several times after the first meeting invite. I a back on old outlook for now and hope Microsoft will fix this and some of the other trouble with new outlook before we have to switch.