How to make the weapon reloading animation work normally together with the IK from Animation Rigging

Hi!
I made an animation of reloading weapon in 3ds max


However, I noticed that in Unity, when converting an object to a Humanoid, the weapon goes somewhere

How to fix it?

Need your thoughts and ideas what to google to solve this problem

And maybe you know yourself, I will be very grateful

I attach the file with the problem by the link:https://drive.google.com/file/d/1zPaSHXE0OU0WS2zlzHBfn4eSRYJhy-kc/view?usp=sharing

 

Ok, I fixed it by just returning Generic, as far as I understand, Humanoid doesn't see weapons, only the skeleton of the character, which is strange, well, okay