Is there quick/stable way to remove all hierarchy in a *.max file?

I think this option can be achieved using merge function. Try it manualy (trough max interface) to see if you can load successful hierarchy, animation, materials etc. Then maybe one from the scripters here can write it, it is a short solution.

But I want remove all hierarchy as the way "New>>Don'tSave>>Keep Objects" does, not loading them. Might be my bad English make you misunderstand the issue here.

What do you call hierarchy ?

Layers structure, parents structure, ... ?

Hierarchy in this 3ds max dialogue box - imgur.com/DyXSj1Y

I'm not a script coder so I'll try to explain what I mean. There're files that I try run all the Cleaner type scripts but they only decrease file size to some point. After that point, there's no script I could find to remove junk or unnecessary data on max file. There's file with a simple object with filesize like 300MB and only procedure "New>>Don't save>>Keep Objects" restore it to <100KB (no any remaning notetracks, animalayercontrol, particleview, reactor collisions, linkcomposite etc...).

So I wondering what left in those files that no script could purge? New scene (Keep objects only) seems only way be able to remove those last junk in a 3ds max scene (of course with the cost you lost all key/animation, links, group, etc...). But sometime I've to clear up the file to its optimized size before go on next step.