After importing my data from vbulletin 3.8, my users' existing posts don't seem to be attached to them.
When I visit a user's profile page and click "Postings", I get
"This member does not have any recent content."
The user's Messages count is correct.
Clicking "Find all threads by username" also returns nothing.
I just rebuilt the User Caches to no avail.
Where should I look?