Swing Settings Not working in MP3 and MIDI Exports

Here are some scenarios where it would be more convenient to be able to export MIDI parts individually without losing the swing (all based on my experiences of using MuseScore's MIDI output in Reaper):

1. You've written out all parts in MuseScore, but your DAW project uses a combination of exported MIDI and recordings of your own performances. In this scenario, you only want to import MIDI into your DAW for parts that you do not intend to perform yourself.
2. After importing the MIDI files into a DAW, you decide to change a part in MuseScore. If the track layout in your DAW matches the layout of the parts in the score and you haven't manually tweaked the exported MIDI, then you can just import the change by deleting the MIDI in your DAW and reimporting all of the parts from MuseScore. But that doesn't work in the following scenarios.
3. After importing the MIDI files into a DAW, you manually tweak some of the MIDI, e.g. to improve the dynamics or the timing. Then you change a part in MuseScore and you want to reimport this part alone into your DAW. The scenario-2 solution doesn't work in this case, because you'll lose the manual changes that you've made to the other parts.
4. The track layout in your DAW does not match the way parts are laid out in MuseScore, so the MIDI parts won't end up in the right place if you import the whole score at once. E.g. you may have composed some of the parts directly in your DAW (meaning that they're not in your MuseScore score). Or you may want to trigger an effect based on what a part is playing (e.g. sidechain compression); setting this up may require you to create multiple tracks for that part. Or you may want to create an additional track corresponding to a subset of the parts, so that you can apply a single effect to the whole subset.

If we can't export individual parts as MIDI without losing swing, then the only solution that works in all of these scenarios is to create a set of temporary DAW tracks that the whole score can be imported into, then move the parts that we need into the right tracks (e.g. the MIDI for changed parts), and then delete the temporary tracks. This will work, but it's irritating given that there's no good reason for MuseScore to ignore swing when we export individual tracks.