Perhaps stupidly, I bought both Claustrophobia and its De Profundis expansion both at once.
After doing so I discovered that the designer has stated the scenarios in the base game are not suitable for playing with the material from De Profundis.
This is a colossal pain because it means sorting and removing all the cards and tiles from De Profundis every time we want to switch back to a base game scenario.
Does anyone know why this advice was given? Does it actually break the game somehow, or it merely untested? And has anyone actually tried it to see if it works okay?