in NX it is called Smart Regeneration
"Generating non cutting moves only
You can generate only the non cutting moves that you change in an operation without regenerating the entire tool path.
To enable this functionality, set the Do Smart Regeneration when Possible customer default or manufacturing preference.
You must generate the operation first in order to create the data necessary for the Smart Regeneration.
The non cutting moves that you can generate using Smart Regeneration are limited to engage, retract, and transfer.
If you modify any parameters other than the non cutting moves, the full tool path will be regenerated."
In 10.0.3.5 MP19 customer defaults it is under Manufacturing -> Operation -> "Tool Path" tab
Production: NX10.0.3.5 MP16/TC11.2
I'd rather be e-steamed than e-diseaseled