Splitting an Import - No action (?)

You want figures of 2 bars long, so the figure option must be on for import. :-)

Hi, when a midifile is imported in the external library  and divided into pieces, it is based on an algorithm that takes into account the musical context.
You can always use CTRL + E (extraction) in Windows and the span tool to make a selection from the imported phrases.
The "harvested" phrase is also placed in the library.
You can also import a midifile for example statically (shown in the arrangement window) and make selections and let the figure recognition loose on it to create a library of phrases.
 

Yes, the naming of these split functions can be misleading. The prefix "Auto" hints at assessments going on behind the scenes, meaning they are not splitting a phrase verbatim into equal sized spans.

At the top level are "chunks": separate spans of activity in a long track. If a phrase is playing non-stop from start to finish, there is only a single chunk (nothing to split). This uses an adaptive algorithm and works really well to prepare long tracks for manual extraction. 

Each chunk, if long enough, may be auto-split into smaller phrases with a preferred length, if there are distinguishable patterns that make good reusable phrases (which is the primary goal of import). This auto-detection of "phrase worthy-ness" is ridiculously complex and requires Deep Learning AI that is not yet ready for publication (e.g. phrases may partially overlap, there are pick-up melodies, etc). Doing this right is a whole field of research in its own. For the time being this uses a more simple algorithm.

And that algorithm seems to have come to the conclusion that your phrase does not suggest clearly discernable reusable phrases (probably because it's playing non-stop with similar density from start to finish).

I understand what you want is verbatim slicing no matter the content. That's on the wish list already.

As suggested in your other feedback thread, it might make sense to  add a switch that enables "dumb" splitting where content-sensitivity is not wanted.