Does not work when saving entities programatically

Hi there, I was hoping for some quick assistance related to making sure an alias does not get created where one already exists. I am using the migrate module to bring in content and everything works perfectly including the aliases. The problem is during my post import process where I am trying to crawl the generated table that migrate module provides in order to create translation sets. (every two rows has an english and french node)

public function postImport(){
    //Fix Translation ID
    $result = db_query("SELECT destid1 FROM {migrate_map_html_intranet}");
    $currentRowCount = 0;
    $current_translateid = 0;
    foreach ($result as $record) {
      if ($currentRowCount % 2 == 0)
      {
        $node = node_load($record->destid1);
        $node->path['pathauto'] = FALSE;
        //$node->pathauto_perform_alias = FALSE;
        $node->tnid = $record->destid1;
        $current_translateid = $record->destid1;
        node_save($node);
      }
      else {
        $node = node_load($record->destid1);
        $node->path['pathauto'] = FALSE;
        //$node->pathauto_perform_alias = FALSE;
        $node->tnid = $current_translateid;
        node_save($node);
      }      
      $currentRowCount++;
    }
  }

The problem is after this code gets run new aliases get generated and I don't understand why this is as I thought pathauto persistant state would block this from occurring.