Chords from chord track to midi track, visibility?

Whenever I create a chord track and drag the cords to a midi track the chords are “created” in the midi track and I can play that track, but whenever I open the midi track I cannot see the chords.

I dragged the chords down in the midi track, I can play the midi track and it plays the chords:

When I doubble click on the midi track it opens and it is empty:

How do I make the chords of the midi track visible when I open the key editor?

Ok I just figured out that it is muted, but somehow still plays. When I unmunted the track every chord was visible.