I managed to put some code in order to load a survey using GET variables.
in index.php I have it in line 664, I changed
//Allow loading of saved survey
if ( isset($_POST['loadall']) && $_POST['loadall'] == $clang->gT("Load Unfinished Survey") )
{
require_once("load.php");
}
into
//Allow loading of saved survey
if ( (isset($_POST['loadall']) && $_POST['loadall'] == $clang->gT("Load Unfinished Survey")) || ($_GET['loadall'] == "loadsurvey") )
{
require_once("load.php");
}
Using GET now I can have the link to load a survey from anywhere
www.mydomain.com/index.php?sid=123456&loadall=loadsurvey