Using Custom Post Types with Custom Menus – WP 3.0

I have a custom post type called Collections. Within this there are 7 posts. I am using the new Custom Menu feature to create a menu using the titles from these posts. I cannot find a way to make new posts in this custom post title add themselves dynamically to the custom menu as and when new posts are created. It seems you have to go back into the Menu tab under appearance and add the new post title manually.

It seems the option “Automatically add new top-level pages” only adds new PAGES that are created not new posts.

Please tell me if this is possible.

Thank you in advance for any help you can give me.