Currently I have a web site running with the Joomla 1.5 script; in Google if you type in a certain search term let’s say (RastaMouse) my site Domain is coming up by the fifth page which isn’t bad as the search term (RastaMouse) is in the title of the site. The site Domain Name is called www.MyDomainName.co.uk, but what I would like to do now is add totally different things to the site nothing to do with (RastaMouse) and have the site like how the BBC has its sections, www.BBC.co.uk/news.... www.BBC.co.uk/sports etc So I thought to use another installation and use the same web address www.MyDomainName.co.uk and somehow move the existing site which is all about (RastaMouse) to www.MyDomainName.co.uk/RastaMouse. But the important thing is, how can I keep the web site ranking for the search term (RastaMouse) if I move the site from www.MyDomainName.co.uk to www.MyDomainName.co.uk/RastaMouse, Rasta Mouse is the most important section of the site currently, it’s important that It can continue to be found, easily. I will also be looking to upgrade the site from 1.5 to 1.6 if this matters. Thankyou
Upgrading the site doesn't change your rankings. When you try to search Google for that keyword, the old URL link would show up. It would take time for your sub-domain to appear on the search rankings with your keyword.