In Reaper, (unlike Adobe Audition 3.01) - once you lock a trk - that's it. Can't move the trk. In Adobe Audition 3.01, you can vertically move locked tracks. Reaper needs this feature please.
Have to be super careful in Reaper when moving unlocked sections of tracks to other track#s, as there's no way to stop trks from changing position resulting in their moving out of time in the new track #s.
In Reaper, if you move unlocked trks vertically carefully, all usually stay in time. Reaper are you listening?
Found how to do this - you have to set up mouse modifiers - choose keyboard "Key" to Move / Vertically and another to copy / vertically
Video here