Sharing for Posterity... and so future editors know why the cast is setup the way it is.

From Seasons 5 - 9, The "Regular Cast" wasn't regular for every episode. Seasons 5 - 8 largely alternate between two pairs of detectives for each episode, with the other pair not being in the episode or credited at all.

Season 9 started with a couple of the long-time characters but switched to another pair of detectives/captain for the remainder.

Since using the "Regular Cast" in TMDB adds credits for every episode, it's not really appropriate for those characters on those seasons. I've had to use the "Guest Stars" to add the main characters only on the episodes they're in/credited.

I'm not really asking for action from any mods, so this can just be resolved unless anyone thinks something different needs to be done.