Mac OS Music app adding " 1" at the end of file names after refreshing track tags

I have a similar issue as this : https://apple.stackexchange.com/questions/85695/itunes-put-a-1-at-the-end-of-many-of-my-song-and-video-titles-how-can-i-fix-t My Music app is renaming some files with the " 1" at the end, like "Highway to hell.mp3" becoming "Highway to hell 1.mp3". In my case it comes from refreshing the track on iTunes. I am using MusicBrainz Picard to tag my files. When the tagging is done, I have an AppleScript refreshing the tracks directly in iTunes. This refresh sometimes makes " 1" appear at the end of some files. Until now I have not been able to identify when it happens but by chance I found a way to clear the name back to original. My solution : in iTunes just get the info of the track which file name ends with " 1". As soon as the info window opens, the " 1" is removed from the file name. It is effective but slow because it needs to be done on the individual track. Get the info of the entire album would not work. I am glad if my experience can help others and would be interested to know if you have a better way to solve the problem. Cheers, Fabien