Well, i found solution to one of my problems with 3ds max.
I leave it here, so i hope that will help somebody too

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How to properly import a ped model in 3D MAX (if the model after import is missing bone names, or skinning applied wrong)?
For an example, the model's name is "ig_beverly.ydd".

Export it to the openFormats(press RMB and select "Save content").

Find the game .YFT file (it's often the same name and location, like "ig_beverly.yft"), and export its skeleton to the same folder as the model(press RMB and select "Export skeleton to openFormats").

Go to that folder, find "ig_beverly.skel" file, and add " FULL"(without quotes, and mind the whitespace here) to the name of it, so the full file name would be like "ig_beverly FULL.skel".

Now you can import "ig_beverly.odd" file from that folder, and it will load proper skeleton and skinning.

The same scheme applies to .YDR files.

First model had their own bones. So i deleted all bones from second model. But i am still getting that bones warning. IDK why. Please, help

I keep getting that warning

[1 warnings]
1 times: Model "lowr_010_r/lowr_010_r" has got more than one root bone.
All of them will be grouped into a new one with default parameters and unique ID.
If you want to tweak these parameters, consider creating the root bone by yourself, and attaching your model bones to it.