Previous version of 0.16.X Experimental
Multiplayer server headless
You can sometimes cut certain type of terrain. Then you get a blueprint of the terrain and everything above is cut. The ground is not.

"It acts as landfill cutter on certain type of land, then everything is cut inside."

On purpose or if this is a side effect ? You can also use landfill blueprints and ghosts
(oops wanted to post in bug reports)