Midi Track lock

In my project, I inserted one midi track using motif. When I made a second midi track, trying to use a different sound, the other midi track also changes its instrument to current preset. How do I make the original midi track stay so it is not interferred?

What mode is the motif in? Just thinking that instrument has to be multi timbral.

Are they using different midi channels?

Try making two tracks on different channels then change the voices on the keyboard and see if that works without any voice selection in the DAW.