Hello,
Thanks for reaching out!
Unless there are tickets on the event, it shouldn’t be a problem to just change the details on the old events. In fact, keeping the number of events down in the database is always good for keeping query times low!
There are a couple of things I would point out..If she is not changing the permalinks each time she enters the new details, then this could of course affect any analytics you may be doing on individual events, as many different events would effectively be the same page.
If she is changing them, then this could result in 404 errors if users try to click a link for an event that has passed and been changed – instead of getting an “expired” event, they would be going to a link that no longer exists.
Otherwise, I am not aware of any problems that doing it this way would cause. I hope that helps! Please let me know if you have any other questions!
Thanks,
Jennifer