Thanks for the quick reply Pascal. I appreciate it! I’ll check out your link.
In the meantime, to answer your questions, I thought (probably a big assumption on my part) that the posts were “connected” to their topics and forums by the post_parent field in wp_posts. I do see that this info is also repeated in wp_postmeta. As far as change dates most of the info in the forums is pretty old (the migration is mostly just for posterity sake) so that’s not as important…