I have to disappoint you,this myth has been busted a long, long time ago.
I know my English is somewhat limited, but the process you are describing is NOT resculpting.
It a called modifiying. If you get a (clay) sculpt you may need to cut it up in order to cast/vac form, etc it.
Imagine you're a sculptor and make a scale model of a Scale car. Then it get's shipped to the factory where it is broken up into parts in order to make a kit out of it. Some minor changes are made.
But those poor guy in the chinese factory IS NOT a re-sculptor. He is a hired WORKER. Nothing more