Ok guys don't panic, i found the answer, in Prestashop/classes/Cookie.php there is a function __set(), in that function there are key value pairs that decide what cart will be shown when you visit
Both Cart = https://mysite/prestashop/en/cart?action=show
and Order = https://mysite/prestashop/en/order
so by setting
$this->_content['id_guest'] = json_decode($_COOKIE['guest'], true);
$this->_content['id_cart'] = json_decode($_COOKIE['cart'], true);
i was able to set a specific cart i wanted to show.