Point cloud rendering - best option to use pointools? How to get 3d models into pointools? dgn>Fbx>3ds>pointools??

I am trying to render some models with point clouds included to give the reality modelling impression and more context to the surrounding area.

Rendering point clouds in aecosim/microstation has not been particular successful but we have had some good results in pointools.

So, what is the best way to get 3d models into pointools. Native .dgn don't import, .dwg import but don't seem to appear (I have read in a previous post that this is an issue.) I am therefore looking at the workflow from dgn to fbx in microstation. Then fbx to 3ds in 3ds max, then 3ds into pointools. I have tried this and the models don't appear in pointools?

Any help would be appreciated.