Scope: Move an old document to a new URL with HTTP 301 Permanent Redirect.

Module used (required if you don’t want to modify an existing page): URL aliases.

1. Create a new page (or edit an old one). Select “PHP code” in input type.
2. Fill the url alias box, with the old document path
3. Insert the following code: <?php
   // Permanent redirection
   header(“HTTP/1.1 301 Moved Permanently”);
   header(“Location: http://www.yoursite.tld/location&#8221;);
   exit();
   ?>
4. Save.

Note: Obviously you can’t see the page (you’ll be redirected to specified address), but you can edit or delete the page from admin/content/node. As admin, if you try to unpublish the page you’ll be redirected anyway: you have to delete the page to fix it.

See also: http://www.somacon.com/p145.php