Is it possible to point a Sitebuilder (older builder) subdomain to a new website created using websitebuilder?

Hi, I use a specific subdomain for something, have been using the same subdomain for years and don't want to change it. All I wanted to do was update it using websitebuilder. Is it possible to point my old subdomain (created with the old sitebuilder) to the new website I created (using websitebuilder)?