Using iMovie 10.1.1 (El Capitan) tried to move an Event to an External HD with "Move to Library." But it said "Missing File." So I "Consolidate Event Media." Didn't work. So in Edit I did "Undo." Event went back to original internal HD, but "Missing File." Can't find them in "Original Media" Folder on either HD. Help!
iMovie (iOS), OS X El Capitan (10.11.3), MacMini