Here is the new list of tables. If more is needed, let me know. The porter no longer works to export IPB. Great tool though!
Again since when? IPB4 is a major rewrite, so significant db changes are kind of expected.
We'd need a full database dump to update the porter. If you have one available, send it my way (email on profile). Feel free to anonymize user data, but it's helpful if you add a dummy user with a known password you can send with it so we can verify password migration still works.