Currently node metadata is not updated when saving through inplace-editing / JCR adapters.
See AbstractJcrAdapter#updatedProperties() probably.
In old admincentral, node metadata is updated when:
- renaming node
- renaming one of its properties
- changing value of one of its properties
- changing type of one of its properties
In old admincentral, node metadata is NOT updated when:
- child node is renamed/updated
- adding/deleting a property to node
- adding/deleting a child node