Ok, all threads should be showing now. This was a different symptom of the "Wrong thread starter" error.
The short form is that the userid numbers the forum uses changed during the conversion. I missed changing a number in the conversion script (the thread starter userid for each topic) so if it cross-matched to an existing userid over here it showed the wrong one, and if it didn't it didn't show at all.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You can post calendar events in this forum