Seo Add-On Problem


I'm having a problem with the SEO Settings and Google Webmaster tool. I recently changed the SEO URL Formats from showing sub-categories to just showing the product-name.html but for some reason Google keeps indexing the old URL's and showing all the SEO URL's as errors. It has been over 1 month and Google is still indexing the wrong URL's. I have also checked my sitemap and it does show all the updated URL's. Please let me know how to fix this problem as Google keeps crawling my old URL's?