We are testing a new ifc-app and it shows all my stories as one bottom level (no stories). First I thought this was because this app is looking for IfcLongName while I had the name of the storey in IfcName. So I've added the name of the storey to both IfcName and IfcLongName but it still doesn't work. Are there any other places I can look at? When I open the IFC in a text editor I see all positions without a value gets a $.