BuddyPress.org

I think my situation is somewhat unique as

$bp->forums->bbconfig = $bp->site_options['bb-config-location']; which is loaded in bp-forums.php is different (subdomain) than the wp root bb-config.php which had a stale reference to the default bb table prefix.

I’m not certain – but you may be able to call do_action( 'bbpress_init' );