Very hard to accurately do this as of Tyros 2 and up because of the massive use of Articulation and Mega voices in the later Yamaha Products. It is easier to listen to and try to re-create the style from scratch on other products than convert and spend days tweaking.
It is now rather unfortunate that no one has picked up where STYLE WORKS left off. With the introduction of Audio in KETRON (especially the EVENT series), there is currently no way to convert a KETRON EVENT Audio/Live style to any other manufacturer too.
Thanks,
AJ