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I have recently started an e-commerce website and have now changed the url structure and added another level to my category pages. So where it before was www.website.com/shirts it is now www.website.com/clothes/shirts. So I added the clothes category (just an example) before the shirt category and am now finding that the old url is still found in the search index and is still live on my site. How could this be? I use wordpress and simply change the urls in the backend. The products are still under www.website.com/product/blue-shirt-123 so they won't be affected but I suppose it now means I have duplicate category pages? So my question is: Should I 301 the the old category page (www.website.com/shirts)to the new url (www.website.com/clothes/shirts). And how can the old url still be live on my site? If this was a bit unclear, please let me know. Appreciate your replies!