Hola! I’m new here and stumbled upon an issue as I was entering the original for Keith Jarrett’s “The Köln Concert”. Released in 1975 this was a West-German release but as far as I can see we are only allowed to select Germany. Before I start entering any Yugoslavian or Czechoslovakian releases I thought I’d ask about the policy on this - My guess is I’m not the first to ask but I couldn’t find anything in the style guides.
Czechoslovakia is available as a release country for releases from 1918 to 1992: https://musicbrainz.org/area/88f49821-05a3-3bbc-a24b-bbd6b918c07b/releases
And so is Yugoslavia (for releases from 1918 to 2003):