It look like you can't globbally edit controller events? or something else goofy is going on.
Do you really need to change them?
The "Ch" popup on MIDI tracks controls the output channel for all events in the track. It's really an "override" setting. If it is set to "none", then the MIDI event goes out on whatever channel is stored in the event. If the dropdown is set to a specific channel, then all data will go out on the specified channel, "overriding" whatever is stored with the event. So, if you change the "Ch" for Track 2 from "None" to Channel 1, that might work for you.