jdx,
Your keyboard is fine.
The functions listed above (Octave, Double and PIANIST are NOT saved upon Power up Settings.
The PIANO/voice will change to whatever it was set for that particual Arrangement. So if in ARRANGER A you have it set for vol40 and in B you have it set for Vol.00, when you are playing and swtich from A to B, you get the value that was stored in B (usually stored within the style file).
Hope this helped.
Thanks,
AJ