Cannot get Split Apart to show up for original Star Trek series

I have ripped the original Star Trek series from Blu-ray which has both the original and enhanced versions of each episode. I want the original and enhanced episodes to show up as different items in my library, but no matter what I do, I can’t get the Split Apart option to show for the show. I have read several threads on this subject including several that cover Star Trek and the original/enhanced episodes. I have followed the advice and suggestions in those threads, but I still can’t get it to work. I am trying to split at the show level, where it is is supported, and not at the season or episode level.

Here is what my folder structure look like:

This library points to the TV Shows directory. Here is what the file naming looks like in both the original and enhanced directories:

Again the library points to the second TV Shows directory (not the first). Here is the Get Info from one of the episodes that shows it is seeing both files:

Despite all this I do not get the Split Apart option under the show:

I have done the Plex Dance multiple times. I also tried to move both individual Star Trek directories up one level so they reside directly under the TV Shows directory, but that didn’t work.

What am I doing wrong? What am I missing?

What directory(s) is your Show library have as root?

You cannot use arbitrary subfolders in a TV shows library. (your top-level Star Trek folder must not be there.)

Thanks @dane22 for the response. That is mentioned in the post. It is the second TV Shows directory shown in the screenshots.

Thanks for the reply @OttoKerner. As mentioned in my post I tried that but that didn’t fix the problem. The reason I put them in a subfolder is because I thought I read in another post to do it that way. I will move them back up one level, do the Plex Dance, and report back what happens.

@OttoKerner @dane22 Ok that fixed the problem, but I SWEAR I did this several times earlier today and it did not fix the problem. I am not sure what I did differently this time. With that said I did notice that the Split Apart is only showing up in one place which is when I click into the show. Does it not show the option one level up when I am looking at the whole library? Maybe this is what was getting me earlier and why I was not seeing it? Maybe I was only looking for the option at the library level.

No, because at the library level it wouldn’t know what to split.