With new version of IEMod I can finally remove Battle-forged. Then after recalculating of character I get this +4(+4,+4,+4,+4,+4,+4)=4 instead of +4+4+4+4+4+4+4=28 armor. Even after add battle-forged again.
So I have +4 armor for free now, its better than +28, but still buggy