All of this is done on purpose to maintain locktivitiy of your Designers into a platform. If it was commercially beneficial to make interoperable file formats b

All of this is done on purpose to maintain locktivitiy of your Designers into a platform. If it was commercially beneficial to make interoperable file formats between the big commercial CAD packages they would do it tomorrow. The best you can hope for is decent .STEP / .iges file export and then import to the system you want. Many workflow in computer aided engineering analysis involve exporting CAD data using .STEP files.