Dungeon Architect

Is there a way to destroy rooms or change the cell size after a runtime dungeon has been built? I’m using the Isaac builder (Stylized layout) with the furthest room spawn/boss emitters but they’re often emitted in single cell rooms even though the room width/length is greater than 1. Ideally, there would be a min room size option. Changing the min brush size helps but spoils the corridors if they’re 3 cells wide etc.