sicijk
4
Loading those sounds and settings gives me a different result here: everything sounds the same triggering whatever track.
There might be some modifications you did after creating that unison-kit?
Macros?
I am really wandering in the fog here…
Can you try to load the Sounds ex-novo?
Just load the sounds - make the Kit poly in unison - try the different tracks
Please report back 
@Biologik
what is that setting about voice priority you’re speaking about?
the only one comes to my mind is RESET-REASSIGN-ROTATE…but they are the other options instead of UNISON