Hi, stuckemn,
To clarify, in order to "move" a file you would need to do an Edit/Cut and then Edit/Paste it into the external drive. Is that what you did? In other words, not an Edit/Copy but rather an Edit/Cut. Also, did you remove the files from the Original Media folder of the project in the Show Package Contents folder? If not, how did you remove the files? What happened when you tried to put them back in?
If you actually moved your media from the iMovie library, then the project is disabled.
If you keep a Time Machine backup you can restore your library to a point in time just before you moved the files.
You could also look in the Backups folder to find an iMovie library backup that preceded your moving of the files, although if the media files have been removed it probably won't work. Worth a try, anyway. To get to the iMovie Backups folder,
follow this file path from the Finder menu:
Go/Home/Library/Containers/com.apple.iMovieApp/Data/Library/Caches/iMovieBackups
When you get there you will see a list of previous backups of your iMovie library. Click on one dated just before your issue started. iMovie will open in that library. After iMovie opens, navigate to your projects browser (where your projects are displayed as icons) and see if your projects are intact.
-- Rich
