Mass edit midi notes in X2

Likely a novice question, but I can't quickly find a simple way to mass edit one midi note (e.g. G#3) to another (G#1) in a track. Any guidance is appreciated. 

If you want edit G#3 to another in the one midi track, open the pianoroll for midi you want edit, and select key on the left side and this select all midi notes for midi track. You can move midi notes by mouse drag, arrows on keyboard (up and down) or press key T and transpose. If you want edit note for all midi in your track, select all midi tracks you want edit and press key F - it open all selected midi tracks in pianoroll. Then apply what i write before.

Is it possible the clip has "Lock Data" set? There will be a blue or white lock icon in the top left of the clip in the track view. If this is the case, right-click the clip in the track view and uncheck Clip Lock > Lock Data