Teleported part not firing touched event?

Howdy. I have a part (call it part A) that is inside a doorway of sorts. Another script teleports a new part (call it part B) inside of part A.

Part A has the following script:

    function onTouch(part)
    wait()
    print("Touched")
    if part.Parent.Name == "Room" then
        print("Room")
        script.Parent.Parent.OpenEnds.Value = script.Parent.Parent.OpenEnds.Value - 1
        script.Parent:Destroy()
    end
    end
    script.Parent.Touched:connect(onTouch)

The code that teleports part B into part A:

    roomModel.Parent = game.Workspace
    --roomModel:MoveTo(position)
    roomModel:SetPrimaryPartCFrame(CFrame.new(position))
    if roomModel.PrimaryPart.Position.Y > script.Parent.Position.Y then
        roomModel:Destroy()
    end

The way part B is teleported is in a SetPrimaryPartCFrame. As a result, part B teleports inside part A. The problem I am having is that it seems that the onTouch function is not firing, as neither "Touched" nor "Room" print. Even though part B is CFramed into part A, part A's script does not register them as touching. Thanks in advance.