How do I make the model as well as the PrimaryPart copy over in procedural generation?

So, I'm trying to make a procedural generation system similar to games like SCP: Secret Laboratory. The room templates are models that all have a PrimaryPart named "Floor" in them. However, only the Floor copies onto the map when generated, but not the model. Any ideas?

--Variables
local prefabs = game.ServerStorage.Prefabs
local rooms = 9
local width = 3
local length = 3
local x = 0
local y = 1
local z = 0
local rows = 0
local w = 0
local l = 0
local chance = 0
math.randomseed(tick())


function drawRoom(room, xp, yp, zp, location, num)
    if num == "" then
        local newRoom = prefabs[room]:Clone()
        newRoom.Parent = location
        newRoom.Floor.CFrame = CFrame.new(xp, yp, zp)
    else
        local newRoom = prefabs[room]:Clone()
        newRoom.Parent = location
        newRoom.Floor.CFrame = CFrame.new(xp, yp, zp)
    end
end

--Generation
for i = 1, width, 1 do
    for i = 1, length, 1 do
        wait()
        if w == width then
            w = 0
            rows = rows + 1
            x = x - 50
            z = z - 50
            print(l) --For testing purposes
            l = l + 1
        else
            chance = math.random(0, 3)
            if chance < 0.15 then
                drawRoom("EndRoom", x, y, z, workspace.World, chance)
            elseif chance < 1 and chance > 0.5 then
                drawRoom("Hall", x, y, z, workspace.World, chance)
            elseif chance > 1 then
                drawRoom("4Way", x, y, z, workspace.World, "")
            end
            w = w + 1
            z = z + 50
        end
    end
end