How to push new parameters without overwriting calibrations?

I understand how to use the compare function in Mission Planner and only change the desired parameters when a copter is in my shop. Unfortunately this is not a workable solution for customer units in the field. Is there a standard process for pushing only “specific” updated parameters?

Thanks!

Use Apmplanner2, good comparison.
Remove parameters you don’t want to push from your .param file, this can easily be done by a bash script or sed.