[Matt]

I spoke briefly with Mike who is away from his computer until tomorrow night but will investigate either then or Sunday.

In preparation for switching forums, Mike moved over all the archives for each forum, up until the most recent page or two of posts. Then when it was time to move, he quickly moved over the most recent pages. based on the timing of the threads in that post, what Mike thinks happened is that it was on the first two pages when he did the initial backup and then got pushed lower so it didn't make it over when the first two pages did. He can manually fix it.