ClickDetector Part Not Functioning After First Use?

I'll make this short. I have a puzzle area where you click on the part (what I'm talking about), it moves to Lighting, Changes the CameraSubject from a localscript cloning, and clones a keypress script into PlayerGui. CODE:

script.Parent.ClickDetector.MouseHoverEnter:Connect(function(Clicker) 
    if script.Parent:FindFirstChild("SelectionBox") then
        print("googoo")
    else

        local selection = Instance.new("SelectionBox")
        selection.Color3 = Color3.new(153, 153, 153)
        selection.LineThickness = 0.03
        selection.Parent = Clicker.PlayerGui
        selection.Adornee = script.Parent
    end
end)

script.Parent.ClickDetector.MouseHoverLeave:Connect(function(Clicker)
    if Clicker.PlayerGui:FindFirstChild("SelectionBox") then
        Clicker.PlayerGui.SelectionBox:Destroy()
    end
end)

--SelectionBox Code Above (might be irrelevant)

local Ready = true
script.Parent.ClickDetector.MouseClick:Connect(function(plr)
    if Ready == true then
        Ready = false
        local keypress = script.Parent.KeyPressing:Clone()
        keypress.Parent = plr.PlayerGui
        keypress.Disabled = false
        local cloneme = script.Parent.LocalScript:Clone()
        cloneme.Parent = plr.PlayerGui
        cloneme.Disabled = false
        local pieces = game:GetService("ReplicatedStorage").PuzzleKitchenStuff:Clone()
        pieces.Parent = game.Workspace
        pieces.Script.Disabled = false
        if plr.PlayerGui:FindFirstChild("SelectionBox") then
            plr.PlayerGui.SelectionBox:Destroy()
        end
        script.Parent.Parent = game.Lighting
        Ready = true
    end
end)

So everything works fine until I press the key. Everything within the key functions as told, but the part just doesn't work when it goes back into Workspace..

CODE FOR KEYPRESS:

local camera = game.Workspace.CurrentCamera
local player = game.Players.LocalPlayer
local mouse = player:GetMouse()


game:GetService("UserInputService").InputBegan:Connect(function(inputObject,gameProcessedEvent)
    if inputObject.KeyCode == Enum.KeyCode.Q then
        camera.CameraSubject = player.Character.Humanoid
        game.Lighting.KitchenPuzzleBruh.Parent = game.Workspace

        if player.PlayerGui:FindFirstChild("SelectionBox") then
            player.PlayerGui.SelectionBox:Destroy()
        end

        script:Destroy()
    end
end)