Postign all post types to Facebook

Hi, a recent update seemed to remove my settings in the social importer and started to post all of my custom post types to Facebook.

This is ok and i changed it back but it also exposed an issue that i need to see if i can fix

My bbpress forum uses a custom permalinks plugin and while the topics all seem to work well the replies always link to an incorrect url.

Could you advise how this grabs the custom post type url so i can see if its something we have done or an error in the gd plugin

thanks in advance