Factorio Forums

When applying a blueprint on top of an existing belt, the items on the belt swap. I have never seen something similar, and I don't know if my game state is corrupt, or the blueprint is corrupt, or something else. Example: green chips on one side of the belt and gears on the other side. After applying a blueprint that upgrades other part of my factory, the blueprint contains the entities already placed, and the green chips and gears have now swapped side. I am using staged blueprints in a blueprint book.
Pre-blueprint Post-blueprint Saved game attached