SONAR can't select/edit notes in piano roll

I can see the notes, and hear them, but I can't touch them in the piano roll view. I also get an unlocked lock icon on the midi clip in track view:

Solution: Go into track view. Right click the clip, find the menu item "clip lock" and hover over or select it to get the next level menu, and uncheck "lock data".

The lock was unlocked because the clip was only half locked, now the lock icon will disappear, and the notes can be edited in the piano roll!