Help with exporting color data for creating displacement inside of Maya

[PortalPyro98 0]

So I'm making a collapsing gravestone and i want to export color data using the depth attribute from the interior detail visualize noise scale tool inside the voronoi fracture node. The data needs to be exported into Maya. This setup works for the initial fracture however when trying to merge in the sub fractured pieces from separate voronoi and export them as one exploded view alembic file for testing, lots of pieces start to intersect with each other which doesn't happen normally.

I'm guessing the way I've tried to merge the color data into each other has caused the pieces to start intersecting but I'm not sure where in the node graph this is coming from. Also i tested just with the original fracture and the export works just fine and the displacement works in Maya. Just wondering if anyone's had similar issues to this and found a solution.    

GraveStone001.obj

GraveStoneFracture0022.hipnc