Impact's Extended 3D Import/Export library has been updated to take advantage of the latest improvements the newer version of our third-party library has to offer. This update guarantees the ability to accurately read the latest file formats from other 3D applications, and was also a necessary update to allow Impact to export *.JT and *.STEP files for the first time.
Updating to the latest version of Impact 3DX will give the best chance of file compatibility, and is required for those users wishing to export to either *.JT and *.STEP files
See also: Export 3D