When the site was rebuilt, the old links don't work anymore. In the present site, the thread link is structured as follows: link of the thread)/(title of the thread).aspx=page (no.) number of the thread)/(title of the thread).aspx=page (no.)
To reconstruct the old link to the new link, you type the old link number and *.* for the title of the thread. For example:
Old link: link
New Link: link