Can you clarify when new versions of a show are listed separately versus when all the episodes are lumped together? Specifically in regard to the Canadian sketch comedy series SCTV, which started out as 30-minute show called Second City TV on Global, then moved to CBC and changed its name to SCTV, then moved to NBC in the United States and expanded to 90 minutes under the name SCTV Network 90, then moved back to Canada as a 45-minute show on Superchannel under the name SCTV Channel.
The entire set of episodes is listed here under the name SCTV Channel but the original 3 seasons are ALSO listed here under the name SCTV and the NBC episodes are ALSO listed under the name SCTV Network 90. Should they be lumped or split, or is this duplication of listings the proper way to deal with such a show?

