I have had attendees get very confused, and meetings be missed, because the attendee rescheduled. It generated a new Microsoft Teams link. I don’t know how, but they will end up using the link from the first meeting and not the second one. I’m not sure why it has to change. In Outlook when you update an appointment, the Teams link doesn’t change.
I believe the user has to remove the old version of the meeting from their calendar. We even send them an email TELLING them that the Teams link has changed, and sometimes they ignore it and we still have issues.
I don’t know how to resolve this.