Octree and Box Morph

Hi guys,
I have a series of boxes generated from created from Octree. I want to BoxMorph 4 lines (within a box) as base geometry into these Octree Boxes.
Instead of morphing out 4 lines from the geometry. only one of the lines showed up in each of the boxes. However, I was able to get what I wanted when I made these lines into pipes and box morphed them (ref second image)
Does anyone know what am I missing, or an alternate way of creating it?
Thanks in advance.