Change het user preset of my Keylab mkII using midi

Hi,

In my setup with several different devices, I use Ableton Live to send midi program change messages for each song to select the correct preset of each device.

I could not find how to do the same to select the user preset of my Keylab mkII. Does anyone know if there’s a way?
Basically these presets are different in the midi channels of part 1 and part 2 and in the location of the split point. If these parameters could be changed using midi, I could maybe achieve the same thing…

Thanks for helping!