Been there -- done done.
Just use the auto-generator tool man in the NL terraformer -- it is really easy and quick and you can manipulate stuff as needed. Be sure though that when you run it, you go into Tools and "cut the track path"! LOL!!! And oh yeah, remove your supports, auto-terraform, and then resupport. You can leave the top parts of your supports there (if they are custom) and just remove the footers and parts underground to make it easy, and then reapply them.