Missing camera in Project but not event FCPX
I have a project which i have spent many hours on however all of a sudden some clips have become "Missing Camera". The videos in the event are fine and do not have the camera icon in the bottom corner. When I attempt to reimport nothing happens. The videos are restored when i insert the SD they came from however i cannot share the project while the clips still reference the SD card.
So is there any way i can stop referencing the camera in the project?
Many Thanks
Ben
Final Cut Pro X, OS X Yosemite (10.10.5)