I have a SharePoint Online calendar that has content from several years ago. I'd like to create a retention policy that deletes anything that is more than 2 years old. Easy enough but what happens with recurring events if they are set up with no end date? Will they get deleted because the creation date of the original item was more than 2 years ago?
Non-recurring calendar items expire according to their end date. Recurring calendar items expire according to the end date of their last occurrence. Recurring calendar items with no end date don't expire.