Blocks exported to Max missing

I need explode blocks before export to a dwg file and then into Max. Or, the blocks missing in Max (In CAD program, blocks are just fine). The settings in Max for importing dwg files have couple options but seems not working for block entities.

How to export Rhino files with block/block instance (not explode to a low level objects) into a dwg and Max? Thanks!

It’s the block reference layer being turned off. Turn on the layer for block reference, blocks show up. But the entity on the same layer from dwg can not be “grouped” together in Max unless explode the blocks before import or link.