UBB Classic 6.7.3 I had merged two forums into one and was rebuilding the forum metadata, almost finished, on a forum with 290,000 posts and somehow the page got closed before it finished. So I turned the forum back 'on' and now instead of 290,000 post it shows 0 posts.

Of course the posts are all still there, but how do I get the count back ? If I rebuild the forum again will the count come back ?

My suggestion would be to have you go and re-rebuild memberdata and allow it to complete.