Mendelssohn: Complete Symphonies - Incorrect extra artist

I imported and identified Mendelssohn: Complete Symphonies, but for some reason it added Berlin (the Band) as one of the performers.

you can see the extra Berlin after the Detaches Symphonie-Orchester Berlin. Probably a repetition somewhere that gets picked up as the band. This happens only at album level, the 3 discs have correct performers