1. Create a ship with wedges, tetras, etc.
2. Save as a blueprint
3. Acquire its blueprint meta item
4. Overwrite the blueprint with something, just to make the blueprint meta item invalid on spawn
5. Fill blueprint meta item
6. Spawn it and it should fail as the original blueprint has been overwritten
7. Normally it justs drops the added blocks which it does, it includes wedges, tetras as real blocks though instead of spawning its source reference block (hull blocks)