When a node is moved or renamed, the 'path_identification_string' field from the 'ezcontentobject_tree' table does not get updated. The 'path_string' field is correctly updated but not the 'path_identification_string'.

Steps to reproduce:

1. Select a node which contains several child nodes, and then either move or rename the node;
2. Log in to database and select for child nodes of the recently updated node;
3. 'path_string' reflects the correct updated node path or node name while 'path_identification_string' is still showing the old data.