I have an issue and I can't find the solution online. I have a character with an imported grand coat. When I transfer the Skin weights, it transfers for all the coat. As you can see in the picture I have attached, this is not how the coat should behave, as the bottom of the coat should not move if the leg moves. I'd like to completely remove the skin weight of the bottom of the coat but I haven't managed to do that.
I tried to adjust Skin Weights manually of the coat, but it doesn't work and the coat keeps following the leg. Everytime I try to set the weight of one bone to 0 for the bottom of the coat, another bone that I changed previously to 0 changes to some value without my input. So that doesn't work.