Hello all.. I am a long time lurker, first post - but figured this would be a great place to get some insight on a situation that I have. I am working with a client who currently has a template based website on one of the big sites that you pay a monthly fee to use one of their templates. The company is an established business, and currently sits atop the Google results for most of the keywords that would be associated with their business for their local metropolitan market. I am in the process of doing a ground up website build for this company, and will be hosting the new site on my servers. I am developing on a temporary domain that I have setup, so as to leave their current site up, and upon completion was planning to then update the nameservers, move the site files and then go live with their website. Now my question is this. How will this affect their current Google rankings, and what is the best way to go about minimizing any loss in current rankings. I will perform all of the basic on site optimizations for the new site, but I am simply curious as to what I should expect after this process is complete (if anything). Thanks in advance for any insight that you guys might be able to provide!