Well yeah that is a work around but my question is why does this happen?

Why when you do not assign a keymap to the sound in EDIT PROGRAM 3/3 you leave it as

OFF/OFF OFF/OFF OFF/OFF OFF/OFF

then the sounds will mute at LHS if ur in arranger mode and will play if you are in Pianist mode. Then if you assign

C1/C6 OFF/OFF OFF/OFF OFF/OFF

then that first sound does not mute in arranger mode on the LHS?

Is that normal?

Thanks AJ