@support, I am getting a lot of mashups between Orchestras named “Colonne” (France) and “Cologne” (Germany). In many cases I am getting 3 or more orchestras. This is a good example:
It is not clear which orchestra roon considers primary or what I should merge to. In the end I decided to merge to a 4th orchestra “Orchestre de l’Association des Concerts Colonne” as this one had the most albums and links with Pierre Dervaux with whom the Colonne orchestra is associated.
Our metadata provider has let us know that they have corrected this today. Please give this about a week or two to be reflected within Roon. Once you see the change on your end please mark this post as the solution.