[Steven Zahm]

@ bebe

Install the Code Snippets plugin and add a new snippet with the following code:

add_filter( 'cn_link', 'cn_link_do_follow' );

function cn_link_do_follow( $link ) {
    $link->follow = true;
    $link->followString = 'dofollow';
    return $link;
}

Save and Activate the new snippet.

This should override the saved value and make the links dofollow. Hope this helps, let me know.