I want to change a building level 01 height from 4m to 4.5m. Upon doing this (constrained) all of the level 01 room tags appear as non enclosed. However, they are still associated with level 01. All walls, floor, roofs etc are room bounding. They have all moved correctly upon the level change and appear fine in section. All model work appears correct except the room enclosures. I've racked my brains (I have been using revit for 7 years) and cannot figure this out. Is this a 2013 bug ?