Hi Ken and thanks for your response.
I could understand the problem of the user. He is concerned with readjusting the sound volume on the timeline. In my example, I too could circle the mistake. Example as follows,
Original sound, scorefitter music, sample music one soundtrack each. Further procedure: right mouse click on the track to be set, in the context menu select "Adjust volume". Continue to set new parameters and save. Reopen "adjust volume" and check parameters. O-Ton and also sample music have kept the new parameters
whereas Scorefitter jumped back to 100%.
Watch my short animation.
https://youtu.be/3XcKJuhfYRQ