I finally had the patience to download the PA1xpro manual. On page 120 it talks about "style element track controls: keyboard range". It sounds like from what it says that if you can limit both the top and bottom range of a pattern then inevitably it must create inversions. That would be cool. I think I'm sold.

From the Manual page 120:
"The Keyboard Range automatically transposes any pattern note that would otherwise play too high or too low in pitch, compared to the original acoustic instrument, when transposed by the arranger. This will result in a more natural sound for each accompaniment instrument.

For example, the lower limit for a guitar is E2. If you play a chord under the E2, the transposed pattern could exceed this limit, and sound unnatural. A Bottom limit set to E2 for the guitar track will solve the problem.

Different Keyboard Range values can be set for each Style Element."