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I did that. I changed all my pages to php but my site is indexed in Google for HTML which when they land is not showing anymore because I deleted the .html files. I need to know the right way to make google index my php pages in replace of the html. I do not want to get penalized for dup content being that there is a about.php and about.html. They both have the same content. I also do not want google to think the pages are gone and penalize me for missing or uncrawlable pages.