One of my clients has just been bought by a much larger company and thus will be losing their website and brand name. My client's site has built up a lot of traffic and authority in its space, so we are very nervous about losing all of this after the sale has gone through. The purchasing company intends for my client's services to be represented on its own website, so I am wondering, from a technical standpoint, what the best way is of going ahead with this, since my client will continue to work with the new company and would like to keep us onboard. Should we doing an 80/20 analysis, recreate our most valuable pages (eg. 70%+ of traffic is to home page) on the new site, then 301 each of these pages individually to its equivalent on the new site, while retaining as much of the old pages' on-page content/structure as possible? One thing I am concerned about is the fact that a large chunk of traffic is from brand searches. Again, should we simply recreate the home page with a page title of e.g. "X company is now part of Y company" in order that we'll still rank highly for the old company's brand name? Any advice on how to go about this is much appreciated.