I have imported a large Movable Type installation into WP. The import tool works well, but for some reason, it isn't displaying the over 10,000 comments on the live site.
In fact, having gone through the administrative back-end, I see that while it claims there are 10,110 comments, I can only see comments on the first 9 (of 934) pages that are listed. Those that I can see in the admin area, are the same ones that do show up on the live site, but they make up a less than 10% of the total that are in the database.
I see in phpMyAdmin that all of the comment entries are there and looking as they should.