autocad to max6, exploded blocks

[Marq]

Hi

 

i have trouble importing cad plans with nested blocks to max6, there are a lot of hidden shapes in these blocks, and when i bring them into max the blocks are exploded thus showing all these hidden parts on top of the drawing and making a big mess. How can i get rid of this, i can't clean them up manually in autocad, because they're too many, so its there a quick way to solve this either in acad or max

 

thanks for the help

mike