Is there a way for cross-posted content to always contain a backlink to the original post, even if the post is a short one? Bridgy will only pick up replies and other interactions for posts that contain a backlink to the original Wordpress URL where the post started.
Not currently, but we’ve considered a setting for that.
There is also a way to make it work with Bridgy even without the backlink. If the original post is updated with the cross-posted URL, Bridgy will figure things out when it crawls your blog. I blogged about it here: