In NX12, NX1847 ans NX1872 the export of Step is not possible if you need to select the bodies you like to export. There are Inch parts and metric parts in the assembly. The Step export works if you export the whole part, which means, that the Step export does not have any problem with mixed units parts export.
However, it is not possible to select sub-parts that have a different unit as that of the assembly, which is an issue in our case.
On a mixed mm/inch assembly we need to be able to export to STEP, selecting the parts that need to be included in the STEP.Anything else will cost us a lot of work, as the subset of parts needs to be sent to suppliers as a standard working practice.
- Create an assembly (units mm) with some components in Inch and some components in mm- Try export a part of the assembly to STEP by selecting one mm and one inch part --> the inch part will not be selectable.
For such a specific Use Case you need to create an ENHANEMENT REQUEST.