There are properties for audio clips, which files were deleted/moved instead "File could not be found" message, and audio clip without file has some duration.
I know English is not your first language. Maybe you could use shorter sentences, and just describe what you did to get this result.
For example
- Start with a new comp
- Load a clip with audio and video, both contained in the same single file
- Delete the video track, but not the audio track
- Save and close Resolume
- Move the file to a different place on disk
- Re-open Resolume
- Now the audio track is marked for re-locate.
Note, the above is expected behaviour, and just an example of how you could describe a series of steps leading to a problem.