* Make 2 shipyards of any size and supply power to them.
* Make a new design; name it “Design A”.
* When Design A is created and loaded, make something. It can be basic.
* In that same shipyard, unload Design A.
* Right-click Design A and choose Edit. Type “Design B”.
* Create a new design. This should be named Design A - exactly like the other one’s old name.
* Build something else. Make it easily distinguishable from the first one (different size, different shape, or different blocks, or any other way of telling it apart). Mine could be told apart because it is about twice as long on its Z axis as the drone.
* Unload Design A.
* Attempt to load Design B in any way you can think of. No matter how many times you unload and reload the design, and no matter which of the two shipyards you place it in, Design A will always be loaded, even if the shipyard you use doesn’t have Design B’s design in it.