UseBB Community

I'm building a converter to upgrade to this software, but i'm running into a couple of problems.

When i'm automatically converting topics and forums almost all the entry's are filled in. I can't import the date becouse of the way the old forum stored the dates, but that's no problem. But when all the topics and posts are imported and the statistics are updated the forums stay empty.

Are there any other databse entry's UseBB needs when looking for topics? More then usebb_posts & usebb_topics.

Sorry for the dutch, but here you can see what's actually converted.

Yes, last_post_id is also necessary.