After creating a part, it's forgotten?

Help and Feedback Scripting Support
1

I am trying to make an Aim Down Sight system for my FPS gun. I am going about this by creating a part, lerping that part, then moving the AimPart to match it, therefore moving the entire model. However, when i do this, it doesn’t lerp the part:
robloxapp-20200917-1828298.wmv (2.1 MB)

Here is my code for the creation and lerping:

UIS.InputBegan:Connect(function(KeyDown)
	if KeyDown.UserInputType == Enum.UserInputType.MouseButton2 then
		if Aiming == false then
			local AimDummy = Instance.new("Part", FakeArms)
			AimDummy.Size = FakeArms[script.GunName.Value].AimPart.Size
			AimDummy.Orientation = FakeArms[script.GunName.Value].AimPart.Orientation
			AimDummy.Position = FakeArms[script.GunName.Value].AimPart.Position
			AimDummy.Name = "AimDummy"
			AimDummy.Anchored = true
			AimDummy.Transparency = 0
			for i = 0, 1, 0.05 do
				wait()
				AimDummy.CFrame:Lerp(game.Workspace.CurrentCamera.CFrame, i)
				if i == 1 then
					AimDummy:Destroy()
				end
			end
		end
	end
end)