I’m very interested in supporting Bridgy. I actually discovered that a few months ago and made a note to implement it on my personal site at some point. I’m a huge advocate of retaining all your data.
I haven’t looked very closely at what’s involved, but am I correct to assume that Independent Publisher doesn’t support it because of the way it separates pings/trackbacks from the comments?
I’ve opened a GitHub issue for this; if you could add any relevant information over there, that would be helpful! https://github.com/raamdev/independent-publisher/issues/155