how to remove weight reflection on bones in blender

[Арбуз Злой]

There is a model, it is modeled using the mirror modifier. I'm creating bones for the model, but when I combine them with the body, the following happens. The weight on the right hand is reflected on the reflected part of the model. And I can’t paint over the reflected part in any way. How to fix this?

 

[Steve Cherk]

модификатор миррор не применет что-ли?