When a calendar event is inadvertently deleted or changed, there is no “undo” or “recover” function. It would also be useful to have a logging function (like Troopmaster) where you can go look and see who made changes to try and pin down what happened and by who to prevent future errors. Audit log does not show future event RSVP changes. Will only search through current day’s date.
Have you looked at the audit log report?
