I have defined two different types of relationships between the default Post type and a custom post type I've created that is called 'Internet article'.
Now one relationship between these 2 objects depicts: Post 'uses as source' 1 or more Internet articles
The other relationships between these 2 objects depicts: Post 'proposes to read' 1 or more Internet articles.
I've managed to create these two different relationships and they are shown in the editor of the default Post type and the custom post type Internet article. You can also select Posts or Internet articles from the Metaboxes in the editor. However, it doesn't save the values.
Is it not possible to define 2 different types of relationships between 2 objects?
Hope to hear from you soon 🙂
Kind regards, Henri