I only have experience with bringing in objects/files from sketchup. When you bring them in they are an UNeditable object with random points to pick on that object. Not parametric at all and with many faces in some instances.
Robert J. Garand
ArchiCAD USA 27-Build 5001 USA FULL
Windows 10 Prof (64 bit) - Intel i9-10920X CPU 3.50 GHz - 128 GB RAM - NVIDIA Quadro RTX 5000