Scrapping movie folders with sequence numbers

Encountered a strange problem when re-organizing my movie collection to be stored on a NAS and allowing Kodi to scrape every single movie correctly.
For purposes of better organizing my collection, I am organizing the movies per franchise.
For example, all Star Trek Movies are in a “Star Trek” folder etc.

Within a franchise folder, I’d like the folders to have a clear sequence based on release sequence, for easier overview and watching.
Specially when moving movies from the NAS to mobile devices, or to check if any movies from a franchise are currently still missing.

Initially I tried giving folders names like this: “(1979) Star Trek: The Motion Picture “.
This basically broke the scrapper, movies did not get detected.

Second attempt I tried a folder structure like this:

Star Trek
=> 01 – Star Trek – The Motion Picture (1979)
=> 02 – Star Trek II – The Wrath of Khan (1982)

This worked perfectly fine and all Star Trek movies got scrapped.
On top I used the “Group movies in sets” setting in Kodi, so my movies got perfectly organized.

However then I tried the same with the Die Hard Movies:

Die Hard Collection
=> 01 – Die Hard (1988)
=> 02 – Die Hard 2 (1990)

Basically not a single Die Hard movie got scrapped.
I am using the TheMovieDB Scrapper for the scrapping.

So now my questions are this:
– Why did the scrapper work for the Star Trek movies, but not the Die Hard movies?
– If the folder naming is the problem (and I guess it is), is there a way to name the folder to maintain some sort of sequence and yet allow Kodi to scrape the movies properly?

I’ve done a lot of Googling around, read about things like cleanstrings but didn’t find a proper (or understandable) solution for this issue.

Hope anyone can advise on how I can solve my current problem.