Quick note out of frustration... After successfully migrating a complex app/database to a new server and IP, we noticed traffic plummet - we initially attributed it to DNS propagation. Checked all our pages, everything working - much faster, etc... Pat each other on backs. Sat on our hands for a day, busy with other stuff, meetings, yada yada. Too many chiefs, too few indians. G traffic continuing to decrease, ad money down, analytics decrease, but can't ascertain exactly why traffic is down. (You'd have to understand the site - we get 100K visits per day to 33K different pages - so it is impossible to ascertain an exact page that may be problematic). We finally go into red alert mode and notice the big, red X's on the sitemaps in wm tools. The pain hits immediately. We have hardcoded db names, pw, etc. in dynamic sitemaps. We painstakingly checked the apps/server/dns/etc... but forgot about a simple little piece. No excuses. Total rookie move. Worst part is that several people who all know better didn't even do fundamental checks. 2nd worst part is having the hardcoded stuff in their anyway when everything else relies on config files. Maybe it's time to create those process docs... Fingers crossed that we get traffic back......
If you have a lead website architect now would be a got time to bash a flower pot in his head . Traffic will probably return 33k of pages will regenerate traffic in time . You just have to keep your focus .