A BIM model including plan drawings can be exported from OpenBuildings Station Designer into a simulate-friendly LEGION Model Builder model. This is made possible with the Drawing Wizard together with a set of clean-up tools to remove small object obstacles and overlapping and generate a merged drawing that can be easily imported as geometry in the LEGION Model Builder to process further. This utility supports transporting models in native DGN, i-model, IFC formats, as well as DWG and DXF drawings.