how to remove episodes that were added via missing episode fetcher?

[Fooby]

Move all the folders in the library to a temporary folder.  Refresh the library in Jellyfin to remove everything.  Move all the folders back to the original.  Refresh the library to re-add everything.

I've got like 3.33 TB of movies in a Movies folder. Moving them is out of the question. Too risky and time-consuming. Would renaming the old library folder, temporarily, creating a new folder of the same name as the old one and refreshing it, then renaming it, and restoring the old folder's name work the same way?