Refresh items in iMovie event?

Question

I removed some duplicate items in my iMovie event via finder. Is there a way to refresh the items in iMovie without having to copy them somewhere else and re-import them?

Answer 1

First close iMovie
In your iMovie Events folder (in the Finder), you should have a folder with the same name as your Event name.
Within this folder you should see your Event clips. You will want to keep these unless you have them backed up somewhere. But you can move all the subfolders to the trash. Move the cache, thumbnails, analysis, etc folders to the trash.
Now restart iMovie. It should see your event and regenerate the thumbnails, cache, analysis, etc.