When creatures leave a room, they do so by door. Since the umbilical was classified as elevator, creatures got confused about how to leave the room. Now it is classified as a door (through the power of CATO), and behaves as such.
The category is changed, but not the classifier. So scripts based on the umbilical should still work.
- DS Elevator Fix, which adds a script to carry grendels to the DS elevators.