There are only two places where the URL should be stored. Anywhere else is an issue with the plugin or theme storing them incorrectly. Both are contained within the wp_options table for home URL and site URL. Those are the only values required to be changed. If you have a development environment, you should not be migrating the wp-config.php file anyway as it has sensitive information for product sites thus on your dev site you can have a separate wp-config.php file to take into account the new values for home and site URL's.
