Hi again AJ

No that doesnt work

Thats the exact way I would normally Save changes while playing midis on the X4 or X1 on its own
But, when its linked to the SD2 It will not save any changes doing it that way.

The MUTE will not work at all and the SAVE will not save even though I do what you said but when I load the midi again it has
It appears that by linking the two units it causes the X4 to automatically select different voices--mostly pianos--for the midis.