Using the move method of the MoveHelper, it is possible to move instances of objects from one placeholder to another.
import com.mind8.moving.helper.MoveHelper;
import org.foederal.eobroker.core.IUnitOfWork;
IUnitOfWork uow = self.getUnitOfWork();
String source = 'Pfuderer_Golfballmaschine_P8.Mechatronik.RTS24.St01Magazin';
String targetEP = 'Pfuderer_Golfballmaschine_P8.Mechatronik.RTS24.ISt02';
MoveHelper.move(uow,source,targetEP);
uow.saveChanges();