I have declared a hierarchical custom post type called Track. When I create a new Track there is "Attributes" sidebar with only Order in it to specify, but not a Parent post.
I don't understand what I'm doing wrong and Parent option doesn't appear. By the way, I'd like to specify another custom post type (called CD) as Track's Parent.
Would appreciate any help and tips!
Here is the code: http://wordpress.pastebin.com/Y6aagTVs