How would I fix this building saving script to load it properly?

local datastore= game:GetService("DataStoreService")
local store = datastore:GetDataStore("Buisldringsssss")
local save = {}

wait(5)
for i, v in pairs(workspace:GetChildren()) do
	if v:IsA("BasePart") then
	table.insert(save, {v.CFrame:GetComponents()})	
	end
end
print("saved")
store:SetAsync("parts", save)


wait(5)
for i, v in pairs(store:GetAsync("parts")) do
	print(v)
	local part = Instance.new("Part", workspace)	
	part.CFrame = CFrame.new(unpack(v))
end
print("loaded")

when loading them back in again, it loads too many parts, looks like it loads them twice. How do I fix this?