Conversion from Unigraphics to Siemens NX is not supported yet :(

Unigraphics is a former name for Siemens NX, an advanced CAD/CAM/CAE software application suite. However, veterans are still using the Unigraphics name.

In 2002, the new version of Siemens Unigraphics, merged with I-DEAS software, was released and called NX, which means "Next Generation". In fact, it was the last version of the software released under the Unigraphics name. All further releases became known as NX. So the addition of I-DEAS functionality to the core code of the Unigraphics has become the basis of the existing NX product line.

Siemens NX / Unigraphics use a .prt extension, which contains 3D CAD parts.

NX, also known as Unigraphics is an advanced CAD, CAM, CAE application which is owned by Siemens PLM Software. It is commonly used for design, engineering analysis and manufacturing. NX is built on Parasolid and runs on Linux, Microsoft Windows, and MacOS.

On the CAD level UX provides parametric solid modeling, freeform surface modeling, reverse engineering, styling, engineering drawing, PMI, reporting and analysis, knowledge-based engineering, sheet metal design, assembly modeling, routing for wiring and piping. In CAE key functions are stress analysis, kinematics processes, CFD and thermal analysis. As for the CAM level, the main function is numeric control programming.