问题
Hi i'm The owner of a Facebook app with this ID: 187382088033833. I've made new website, and i want to recover my old comments made with my application.
E.g. in this page, in the old version i got a lot of comments: http://www.youris.com/Environment/Bees/Bees_restored_to_health_in_Italy_after_this_springs_neonicotinoidfree_maize_sowing.kl
why now i can't see the old comments? can you help me?
回答1:
According to the Facebook Comments Social Plugin documentation, comments are tied to a URL for the page that they were made on. Migrating to a new domain, or moving your page to a new URL, without keeping your comment social plugin URL setting the same as what it was in the past, will cause you to lose your comments.
I would try changing your href setting on your plugin to the old URL for the page you're loading. You may have to maintain that old page as a redirect to the new page should Facebook try to verify it's existence before rendering the comments plugin, or should someone click a link that is published to their news feed so they get redirected to the appropriate place.
来源：https://stackoverflow.com/questions/17570850/how-do-i-migrate-facebook-comments-from-one-site-to-another