I have A disk I used for the S975, and a folder in my computer with all old Yamaha data.
My method:
Open two screens in computer: One for the new mem. Stick and one screen for the data from the S975. Copy and Paste, or Drag into the new disk the data that you feel you might need. Open the new mem. Stick in your new Sx900. Delete what you feel is not necessary. I do the same with the old Yamaha data.
I have styles from Gary, Rikki, Donny, and a few others. The job of selecting the good styles begins with deleting the ones you do not like. Same with all the other information you have. Keep in mind that editing the work you have done must stay open, what you loved today may sound terrible tomorrow.
Bernie, you may know what I have just written, but it was needed in case.
The good part:
As you work through, your Sx 900 it will have a Bernie flavor, not a Steve, Donny, or John flavor. It is my opinion that the Sx900 is the best tool Yamaha has made, excluding the Genos. Treat it as such, and you will enjoy what happens.
Post some of your ideas about setting up, then make changes if they fit your what You want. Keep in mind that the Sx900 cannot fit everybody’s wants and desires.
I select my song in the Play List and I have 8 Regs and 4 OTS, WOW. But if I use a Reg just to change voices, then maybe there is no reason for a Wow.
I am open for your opinions, John C.