Need a workflow to wave link a body in an inch assembly into a mm component.
Solution
In order to overcome the mixed unit work/displayed part limitation for this case, create a new mm parent assembly above the existing one. You will then able to make the mm component the work part and link a body in from the inch component. Once the operation is complete you do not need to save the newly created temporary mm parent.
The reason this process is necessary is because NX requires the Work Part to be the same units as the Displayed Part.
Notes and References
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: ASSEMBLIES
Version: V1899
Function: CONTEXT_CONTROL
Ref: 001-9830550