UBB.threads PHP Forum Software Community Forums UBB.classic UBB.classic 6 Support Moved a Post, But Shows as Last Post

I moved a post from one forum to the other.

However, under the original forum, there's still a message that says the last post was x time (which was the time of the message I moved.)

Is this normal, or can I clear something so that the "Last Post" time is in fact the time of the last post in that forum?

I cleared the cache in Control Panel.

Thanks for any help!

Mitch