in fact index.php appears just in a few lines of a few files : qa-include/qa-index.php and qa-include/qa-base.php. In the database, index.php might be present in the table qa_pages and in qa-posts ( internal links set by users ). It is a little heavy but possible , after a general archive , to change the index.php used by Q&A to qa.php using an editor and phpmyadmin .