or 20,000 units up so all builds fail to load.
If you put it 20,000 units up, the map won't load anything, but any saves made from it can definitely be loaded anywhere, they'll just be up in the sky, ready to be moved to the ground with the duplicator wand.
Pretty useless if you are trying to keep people from taking stuff from your server.
Even the 20,000 units in the ground method isn't perfect, someone dedicated enough can use Nitramj's build mover to raise it up through the ground. Someone mentioned you can do it in excel too, but you would need to replace all of the spaces between the numbers with indentations for it to load right in excel, then change them back to spaces when you put it back into a save.
In any case, it would stop most people who are interested in stealing builds, as they probably don't have the patience to do it.
OR it could just save who built it when saving...that would solve all of this :D
You'll be able to open up the save in notepad and change who owns all the bricks, unless they are done through some insanely complicated method.