I did. My offset height is in relation to the level I am working on. The Architect moved the level up 1 foot and pushed all my ductwork through the floor on the level above. My plenum space decreased by 1 foot. I need to essentially change my offset height for every element -1 foot. I was thinking about changing the height of the associated level back to what it was. I would then be concerned with exposed duct in the associated level rooms. This seems much easier to my alternative. In AutoCAD I did nothing. Now I have to redesign...Very efficient. Oh ya, the Architect wants this in 1 day.
"It's hardware that makes a machine fast. It's software that makes a fast machine slow."