**System Information**
Archlinux, Intel Core i5, Sandy-Bridge
**Blender Version**
Broken: 2.72b and current master (3e7e97f1)
Worked: (optional)
**Short description of error**
bpy.ops.object.duplicates_make_real(use_hierarchy=True) doesn't restore the parent/child relationship.
**Exact steps for others to reproduce the error**
In {F130306}, confirm the command written in the python console.
Result: The two cubes are instantiated, but are not connected.
Expected result: The upper cube should have the lower cube as its parent.