I am trying to nest 3 levels of boxes using Smart Containers. Can that be done? Instead of recognizing the third level, it is flattening the hierarchy to 2 levels. Here is my data:
ParentID | ShapeID | Label |
Box1 | Box2 | Middle box 2 |
Box1 | Box3 | Middle box 3 |
Box4 | Box5 | Middle box 5 |
Box4 | Box6 | Middle box 6 |
Box3 | Box7 | Inner box 7 |
And here is what I am getting from Smart Containers:

I have set Group by to ParentID and Display to the Label.