Every IfcBuildingStorey of the effective model (#5249) with resolved name + elevation, low → high: a storey deleted this session is not listed, and one created this session is, named and elevated from its authored payload.
Optional
Every IfcBuildingStorey of the effective model (#5249) with resolved name + elevation, low → high: a storey deleted this session is not listed, and one created this session is, named and elevated from its authored payload.