Hello, I have one site having page in .aspx extension, and all pages were with query string so i had redirect to Proper_name.aspx format pages using url redirection. now i want to create name such a way proper-name.html which contain same content as Proper_name.aspx now my question is if i create new page with same content that it will penalized in duplicate content. so i m thinking to go for permanent redirection from Proper_name.aspx to proper-name.html pages. but i m confuse as Proper_name.aspx is already redirect from query string pages. now what should i do to keep my ranking and PR as it is. let me know the suggestion. thanks in advance