How to save/load models using DataStore?

I'm trying to get a save/load system using DataStore on models. I'm not sure if I am doing this correctly. I've read the Wiki article for DataStore as well as multiple Youtube tutorials and applied it somewhat in this script but I don't know what else to do.

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Every time, the outcome is "New "..player.Name.." Data" and in the number checklist in the second function, it always prints "1" What am I doing wrong?

local Players = game:GetService('Players')
local DataStore = game:GetService('DataStoreService')
local PlayerData = DataStore:GetDataStore('PlayerData')

Players.PlayerAdded:connect(function(player)
	local Old = PlayerData:GetAsync('Build')
	if Old then
		local stable = {};
		local list = game.Workspace.CookieSheets['CookieSheet'..player.Name]:GetChildren()
		for i=1,#list do
			stable[i] = {list[i].Name,{list[i]:GetPrimaryPartCFrame():components()}};
		end;
		PlayerData:SetAsync('Build', stable);
	else
		print('New '..player.Name..' Data')
	end
end)

Players.PlayerRemoving:connect(function(player)
	print('1')
	local Old = PlayerData:GetAsync('Build')
	if Old then
		print('2')
		local stable = Old
		local ModelsContainer = Instance.new("Folder",player)
   		ModelsContainer.Name = "ModelHolder"
		for i=1,#stable do
			print('3')
			local nm = ModelsContainer[stable[i][1]]:Clone();
			nm.Parent = player
			nm.CFrame = CFrame.new(unpack(stable[i][2]))
		end
	end
end)

It never gets so save your data because Old wil always be nil if it doesn't save ._.