When you use the Import IFC Data and Export IFC Data tools (new interface), you can assign attributes by means of an editor. Allplan 2020 no longer differentiates between IFC versions; therefore, you no longer need to include the version in the header.

Export IFC Data (new interface) provides more new features:

• When you assign an IfcObjectType to an Allplan object, this object will be transferred as a BRep. If the IfcObjectType assigned matches the native Allplan element type, the program ignores the assignment, trying to transfer the element not as a BRep. This prevents loss of quality during IFC export.
• IFC export transfers structural framing objects as objects created by extrusion. You can create these objects by using the Structural Framing Column and Structural Framing Beam tools.
• When you export IFC data, Allplan transfers the following objects that you created with tools in the Landscaping and Urban Planning tasks:
  • plants, plots and drawing as IfcGeographicElement
  • paths as IfcCivilElement
  • buildings as IfcBuildingElementProxy
• Allplan transfers the labels of most architectural components.
• When you export data of doors and windows, the AllplanAttributes PropertySet gets a suffix in parentheses (for example, for smart window symbols, roller blind housings or window sills), which can cause problems. When exporting data to the IFC4 format, Allplan no longer adds the suffix when the Combine smart opening symbols option is not selected in the IFC Export, Import Settings.
• When exporting reinforcement, Allplan transfers the following quantities: BarLength, BarLengthTotal, BarWeightTotal, and BarDistance. You can find these quantities in the AllplanQuantities PropertySet.