Looks like I was able to solve the problem. Apparently, the problem was due to the fact that after migrating from iTunes.app to Music.app, the xml-files (the library in the old format, and, possibly, some playlists) remained in the folder with the library, which somehow confused the Audirvana… After deleting these files problem is gone.
The Audirvana began to read the REPLAYGAIN_TRACK_GAIN tag correctly, but with the rest of the tags everything remained as before… I circumvented this as follows:
- analyzing the track in Audirvana;
- forcibly synchronizing the music library in Audirvana;
- analyzing the track in an external program (I like the result of its work more) - the Audirvana tags are overwritten;
- synchronizing the media library in Audirvana once again;
- enjoying the result )
Sorry for bad English…