Motor6D seems like break when I apply it

Help and Feedback Scripting Support
,
#1

I tried to copy motor6d(I emptied both part0 and part1 in server storage) and weld it to character, but motor6d looks like break when character place to workspace.

game:GetService("Players").PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function(char)
		print("new char added")
		local attacking = Instance.new("BoolValue")
		attacking.Name = "attacking"
		attacking.Parent = char
		local sword = storage.sword:Clone()
		local grip = storage.grip:Clone()
		grip.Part0 = char.RightHand
		grip.Part1 = sword
		grip.Parent = char.RightHand
		print(grip.Parent, grip.Parent.Parent, grip.Part0, grip.Part1) --checker
		sword.Parent = char
	end)
end)

I saw sword is generated but couldn’t find motor6d in right hand, and this is output of print line
RightHand Eattato_HACKED2 RightHand sword