How to get nested ForestPack objects into Unreal?

I am using 3ds max with Forest Pack, and I use one branch to make a bush to scatter around. One “foliage” object to scatter in another “foliage” object. I use Datasmith and it translates the first scatter object, but not the second.

How can I get my nested scatter objects working in Unreal?

For foliage, it is massive amounts of polygon saving using this method and I really want this to work.
Any workaround is also appreciated.

Wait you can export Forest Pack with Datasmith? How does that look like?

Recently I spoke with Jaime Parga, from Itoo Soft, at Mundos Digitales 2018, about Unreal Studio and they are considering to port Forest to UE4, so it would be a very good news. How they will do it? He doesn’t told me anymore. It would be needed to remain its procedural behaviour.