My web site was coded in Coldfusion and over the years has obtained a good ranking. I recently migrated the front-end to a Wordpress site and wanted to know what is ideal way of updating Google and the various search engines of of the updates.

For example, the home page of index.cfm is no longer valid since it's index.php. I've submitted an updated sitemap.xml file to Google. I'm sure my site will slip some while the search engines re-index my site but I'd like to try and minimize this as much as possible with the holidays coming up (my site is a service oriented site that caters to people who travel during the holidays).

Right now, the old .cfm pages are still online but are re-routed to the appropriate Wordpress page (for example, about.cfm is now routed to /about/ using a cflocation tag.). Not sure if I should pull down the .cfm pages all together or leave them in place until the new pages are picked up by the search engines.

Any advice would be helpful.