We recently added a route filter to form new URLs - /resources/ was changed to /downloads/ . I checked that Google is reporting duplicate URLs. Because the resources which were linked from the forum posts that had /resources/ in the URL are still intact. That is, even with the router filter in place, if I directly type /resources/ , the page loads fine. Which means there are two URLs on the site that have exactly the same content. Is there any way to fix this?