For Super Order mod 2.0, you will also have to change
admin/includes/extra_datafiles/tracker.php

The correct url should be: /admin/super_orders.php?action=edit&oID=xxx
To make the change, look for
Code:
define('FILENAME_EDIT', 'super_edit.php');
and change it to
Code:
define('FILENAME_EDIT', 'super_orders.php');