uTrack24 to record USB MIDI with Ableton live

In USB interface mode you can use the uTrack24 as a 24/24 soundcard. The midi not involve to this topic at all.
You want to connect your other USB interfaces to the Ableton, so you’ll record everything there, you will receive the audio from uTrack and the midi from your other interfaces.
I still don’t get it what is the question, because in USB interface mode the device not a recorder or a player it is a standard soundcard, so if you want to record or playback this have to be done on your computer.