Cloned map falls apart?

I tried to make a random map chooser. It works, but I need my map destructible, so I unanchored the map. However, it falls apart. I even included clone:MakeJoints() What was so wrong?

local function changeMap()
	local maps = game.ServerStorage.Maps:GetChildren()
	local map = maps[math.random(1,#maps)]
	local clone = map:Clone()
	clone.Parent = game.Workspace.GameMap
	clone:MakeJoints()
end

My map also has folders and models inside the cloned map. All the parts in there have welds, studs, and inlets.

This may because your map is not Anchored or it has some parts that are not welded correctly.

-Enomphia