Hi kmccall, thanks for sending the file. It looks like it might be some bug in how MoI's STEP importer processes instances in the file. It will take some detailed investigation to figure out exactly what's going on. In the meantime if there is any method in FormZ for converting instanced objects into regular plain non-instances try doing that before your export to see if that lets you get a good export.

SAT format may be more reliable if you can find a setting for using an older ACIS version.

- Michael