The following notes are useful for STEP AP203/AP214 translations:
When the Master units in the DGN file are different from the units in the STEP file, the dimensions of the STEP model are changed to the DGN file master units.
Translation of solids, wires, sheets, surfaces, faceted Preps, and curves is supported.
For AP214 translation, bi-directional exchange of colors and layers is available.