This is a feature request for POSSEing person-tag reply posts.

I.e. if I post a person-tag reply on my own site, like documented here:

https://indieweb.org/tag-reply#person_tag_reply

where one (or more) of the reply-to URLs is to a Facebook permalink post (likely others's photos, but could be my own that I'm adding person-tags to after I published it), Bridgy Publish (of my person-tag reply) should propagate that person-tag reply to that FB permalink.

This is distinctly different (but may be related to)

• publish should propagate person-tags to POSSE copies #459 (probably most similar to this, which is about propagating person-tags on your own photo post that you're POSSEing)
• backfeed person tags (especially on photos) to the original posts #488
• backfeed responses to mentions/tags #540