If your new resource is a child of the old resource, everything that uses the old resource, will also use your new resource. This way, you don’t have to re-do every item in the game with metal ingot in it’s recipe.
If your new resource is a child of the old resource, everything that uses the old resource, will also use your new resource. This way, you don’t have to re-do every item in the game with metal ingot in it’s recipe.