I created some holes in my doors (for pulls), created some restraints saved the cabinet.
I added the cabiniet to batch.
Selected the cabinet and then modified the doors to select an alternative (from within the batch screen) and the drillings that I had added to the doors dissappeared
Part Editor cuts on slab doors and drawer fronts do get eliminated when you change styles. It would be nice if they remained, but at this point they don't