@heroyouwi’s fix no longer works. It still picks up the users correctly but no longer imports any topics or forums.
The phpbb.php file included with 2.6.5 does pick up the topic and forums but misses the users so I merged them.
here is a version that works with phpBB 3.1.3 and bbPress 2.6.5
https://gist.github.com/TheRobotFactory/e8ac4b3dea7920d69f1a959d216f92a3
