Quote:
When I save a track to file (TRACK -> SAVE TRACK TO FILE...) as type-1 MIDI and then import that track elsewhere ...


If you save it as type 1 it saves as a multitrack file.
When a type 1 file is opened in a lot of software/hardware it will default to opening to multiple tracks, and if multiple tracks don't exist, it may ask if you want to (or it may just do it) separate any MIDI channel data to it's own respective track. MIDI channel 1 on track 1 etc.

What you are not telling us in your original example if the multiple tracks contain multiple or separate MIDI channels.

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