In earlier OpenBuildings Station Designer editions, when a part was defined to use a unifier part for the "Cut Plane View Attributes", the center line symbology was also automatically derived from the same unifier part. This was confusing for users, particularly since the Family/Part Editor preview boxes and the Center Line Symbology dialog provided no indication of the connection. This is no longer the situation. The source of symbology in the Center Line Symbology dialog properly displays and the Family/Part Editor preview boxes properly update.