Reply To: Posts do not appear in topics after Buddypress migration
I can see all topics and replies just fine in the backend and in the database, though it’s confused me that posts seem to be saved in the wp_posts table, not wp_bb_posts. I also can’t figure out where the new forum gets saved, because it’s not in wp_bb_forums, nor do new topics appear in wp_bb_topics. Anyway, they appear in Buddypress activity streams, and I can edit them in the backend, so it seems they’re just not making it to the page.
This is correct, bbPress plugin 2.x no longer stores the data in the old BuddyPress DB tables, each type is a WordPress custom post type ‘forum’, ‘topic’ & ‘reply’ which you would see in the wp_posts table.
After the import did you run the repair tools?
https://codex.bbpress.org/repair-forums/
If not (or even if you did) it would be a good idea to run each of these.