I want to see all parts in the key editor

I am working on an orchestral arrangement. I would like to see all 40 instrument tracks in the key editor. When I select them all and open the key editor, only the first 5 or 6 are shown. Is it possible to see all at once in the key editor?


All parts should be shown. Melee sure you have really posts on the tracks. The Key Editor is based on Parts, not tracks.