# vtkMRMLModelHierarchyNode nodes imported as subject hierarchies
**URL:** https://discourse.slicer.org/t/vtkmrmlmodelhierarchynode-nodes-imported-as-subject-hierarchies/11707
**Category:** Development
**Tags:** subject-hierarchy
**Created:** [May 26, 2020, 9:24am UTC](https://discourse.slicer.org/t/vtkmrmlmodelhierarchynode-nodes-imported-as-subject-hierarchies/11707 "2020-05-26T09:24:31Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@RafaelPalomar](https://discourse.slicer.org/u/RafaelPalomar)
#### Post date: [May 26, 2020, 9:24am UTC](https://discourse.slicer.org/t/vtkmrmlmodelhierarchynode-nodes-imported-as-subject-hierarchies/11707/1 "2020-05-26T09:24:31Z")
Hello,
I create a model hierarchy (based on vtkMRMLModelHierarchyNode objects) and save the mrml scene. When I open that scene, the model hierarchy has been turned into a subject hierarchy. Is that the expected behaviour?
Thanks you in advance.
---
### Author:  [@cpinter](https://discourse.slicer.org/u/cpinter)
#### Post date: [May 26, 2020, 9:41am UTC](https://discourse.slicer.org/t/vtkmrmlmodelhierarchynode-nodes-imported-as-subject-hierarchies/11707/2 "2020-05-26T09:41:34Z")
Yes, model hierarchies are considered to be deprecated, as specified in the Slicer 5 [roadmap](https://www.slicer.org/wiki/Documentation/Labs/Slicer5-roadmap#Model_Hierarchies).
We added all model hierarchy features in the subject hierarchy folder items. Please use those instead.
---
### Author:  [@RafaelPalomar](https://discourse.slicer.org/u/RafaelPalomar)
#### Post date: [May 26, 2020, 10:50am UTC](https://discourse.slicer.org/t/vtkmrmlmodelhierarchynode-nodes-imported-as-subject-hierarchies/11707/3 "2020-05-26T10:50:19Z")
Hello @cpinter, thanks for the reply.
I guess this opens the related question [Passing hierarchies to CLIs](https://discourse.slicer.org/t/passing-hierarchies-to-clis/11706). Any clue?