Proxy particles works great again! :)
Instanced groups are now working with one notice, only layer 1 of the scene got exported, it's not big problem, but the question of comfortable use.
For example a have a bulding in this scene, it has many separate objects, windows, facade detail, etc. And it's easier to work with by managing those objects by layers.
I can send them to layer 1 and for the many polygon building it will be little hard to work around because of hardware. I think you can make all layers to be exported but this is not to good because some time I use some layers for unused geometry for and in that case it will be exported to, so only grouped objects must be exported.