We have the following URL sections:http://www.movie-website.com/movies/movie-name/trailersAnd we want to change it to:http://www.movie-website.com/trailers/movie-name/Of course we are looking at the following:301 redirecting all old URLs to new URLsUpdating the sitemap with the new URLsKeeping the old URLs as part of the sitemap to help google transition to the new URLsAll occurrences of the old URL on the website have been updated to the new URLsCan our rankings in google fall despite the above precautions? And if so, why?Part 2 of this question:What if I wanted to make the change like this:http://www.movie-website.com/movie-nameAnd we want to change it to:http://www.movie-website.com/movies/movie-name/(Adding a directory between the root and the content.)Part 3 of this question:What if I wanted to make the change like this:http://www.movie-website.com/movies/movie-name/And we want to change it to:http://www.movie-website.com/movie-name/(Removing a directory between the root and the content).
We want to change the URLs of an entire section of the website, what all can go wrong with SEO?
seo;301 redirect;web crawlers;googlebot;pagerank