What does that have to do with what I said? If you want the Greatest Hits to not show up as a compilation than just uncheck the box. Not everything is going to be 100% compatible with iTunes. I’ve had to do that on Greatest Hits since using MB/Picard. It annoys me too that I had to write a script that all writers and lyricist are composers, because iTunes only uses composers, but I didn’t try to make MB change. When in Picard, change the 1 to a zero if it has it or just uncheck the box in iTunes itself if Picard adds it because MB calls it a compilation.
Is there a way to write a script that if the same artist is on all tracks to not mark it a compilation? I’m not sure. That would be cool, but I don’t see MB changing anything for a one-click check box on iTunes.