Hi Ron,
since you have loaded and investigated everything is working properly - excellent. The original Music Style Arrangers have 4 registrations (as explained in the index text files included), thus it does not matter what is in Bank A memories 5 to 8 since it has nothing to do with the loaded files, just as the other panel memory banks do not, you can use them for your own purposes.

They are ready to play - just load, play a left hand chord, wait for the end of the intro, and use the 4 registrations through the panel memories.