Hello Musical Memories:

I did make ethnic styles for the Korg PA800/500/2X, etc....so,
I have some experience as a style designer, and I can tell you is that each keyboard manufacturer, and even within the same brand, but different generation like the PA 50 to the PA500 there are internal functions like the Guitar mode (PA500)to mention one, not present on the PA50, and most of the newer styles are made using the latest features, so, been said that, let alone the internal sounds map on each model varies from model to model.

It is difficult to get a good conversion without extensive editing, not to user friendly when you need to edit note by note, part for part, etc.

Not matter if you are using the Style Works Universal, that it does works, much better on/for the older, like on the GM-ish tone generation keyboards.

Is really hard to have a decent conversion because now the newer keyboards have more sophisticated tone generations like the S.A., S.A.2, Wave cycling, DNC, Etc...not available on smaller models, of other brands...

Just my 2 cents.