I am using the 'website' custom field to create a website Address custom field on a post.. The GF entry shows the website address as entered BUT the generated post always shows a value for the field of the page url ( e.g. url of the form preview ).
e.g. I entered http://internet-mentor.co.uk in the form and that's what shows when I view the entry in Gravity Forms. However, the value in the post for the custom field Website Address is http://internet-mentor-deva.co.uk/wp-content/plugins/gravityforms/preview.php?id=2 which is the address of the form preview.