I could swear I used to be able to draw in midi CC in the key editor to all the midi events I selected at the same time with the same amount. I could also make all the tracks have the same articulation if that articulation was available on the map.
I have the “Edit Active Part Only” button off. I can move the notes around at the same time but when I choose an articulation I have to do each part individually. This is also true for editing Midi CC.
I realize some expression maps may be different but if I am selecting something in common I would think it would work anyway as it does when parts are moved from one midi track to another.
This happens even when both midi tracks are using the same expression map.