Tracks appearing in ‘groups’ they don’t belong to

[mv70]

(27-11-2018 07:10)simoncn Wrote:  Is the tag you are using for this named RATING? Does the problem affect FLAC files, WAV files or both?

thanks for looking at my post. I should have been more observant, but I think only wav files. I did use a tag called 'Rating' and now progressively changing them to a tag called 'rate'.
I did find whole albums in my '5' subgroup that did not have the 'rating' tag specified at all, whereas for other albums only one of the tracks on the album had the 'rating' tag specified and all the tracks appeared in the rating sub-group. since I've 'fixed' al the tracks, no more have re-appeared although I've re-scanned in minimserver and re-booted the Synology.