Moving a node in structure to another structure does not change structure ID of the moved node's children.

public function move_to_structure($page_ref_id, $structure_id, $begin=true)

public function move_to_structure($page_ref_id, $structure_id, $begin=true)
        {
                $page_info = $this->s_get_page_info($page_ref_id);
                $query = "update `tiki_structures` set `pos`=`pos`-1 where `pos`>? and `parent_id`=?";
                $this->query($query, array((int) $page_info["pos"], (int) $page_info["parent_id"]));
                if ($begin) {
                        $query = "update `tiki_structures` set `pos`=`pos`+1 where `parent_id`=?";
                        $this->query($query, array($structure_id));
                        $pos = 1;
                        $query = "update `tiki_structures` set `structure_id`=?, `parent_id`=?, `pos`=? where `page_ref_id`=?";
                        $this->query($query, array($structure_id, $structure_id, $pos+1, $page_ref_id));
                } else {
                        $query = "select max(`pos`) from `tiki_structures` where `parent_id`=?";
                        $pos = $this->getOne($query, array($structure_id));
                        $query = "update `tiki_structures` set `structure_id`=?, `parent_id`=?, `pos`=? where `page_ref_id`=?";
                        $this->query($query, array($structure_id, $structure_id, $pos+1, $page_ref_id));
                }
                // get the page_ref_ids of all child pages of the moved page            
                $child_ref_ids = array();
                $result = $this->query("select child.page_ref_id from tiki_structures p inner join tiki_structures child on child.parent_id = p.page_ref_id where p.page_ref_id=" . $page_ref_id);
                while ($row = $result->fetchRow()){
                        array_push($child_ref_ids, $row['page_ref_id']);
                }
                // update the structure ids of the child pages
                $this->query("update tiki_structures set structure_id=" . $structure_id . " where page_ref_id in (" . implode(',',$child_ref_ids) . ")");
        }