How to save node form data in form_values using drupal_execute
If I understand right you basically want to clone a node later? If this is the case than you can just:

$nid = $the_nid_of_the_old_node;  //get the $nid of the old node
$new_node = node_load($nid);      //load the old node object
$new_node-&gt;nid = NULL;            //unset nid to tell node_save that this is a new node
// do what ever you need to the new node
node_save($new_node);             //save the new node


That should do it.