Symptoms: project displayed “Modified File” in random clips. If the original file was dragged onto the timeline, it would disappear temporarily until next reboot.
What didn’t work
- Deleting proxies
- Deleting generated media
- Reconnecting missing media
What did work
- Create a new library
- Drag the old timeline to the new library, when copying select “Include Project without Media”
- Reconnect missing media
Hope this helps