The Graals will blink and drop in events if the 'No Graals' droppable has not been placed. Otherwise the Graals will become invisible and not be dropped unless you log off or have 100AP; they will not drop if you die or are in a no-PK level.
The relinquish command was put it only for testing really, and causes the Graals to drop in exactly the same way as if you had died. If there are other players nearby it will drop near your body. If there are no other players nearby it will drop at one of its spawn points. This is why the Graals sometimes disappear when you drop them; it is intended behaviour, not a bug. Now that Graals will automatically return to their spawn points if left untouched for a while the latter behaviour is less required, so I can look at changing the way it drops to prevent the confusion.
I don't know why the Graals would not blink in the warptex level if it's non-PK. I will take a look at this.
