I recommend that you consult the solutions in the article: https://forums.unrealengine.com/t/problem-exporting-or-direct-archicad-datasmith-link/1892423/3?u=sleib-gs
I recommend that you consult the solutions in the article: https://forums.unrealengine.com/t/problem-exporting-or-direct-archicad-datasmith-link/1892423/3?u=sleib-gs