def METHOD_NAME(self):
    for old_obj in self.session_old.query(self.model_from['Context']):
        new_obj = self.model_to['Context']()
        for key in new_obj.__mapper__.column_attrs.keys():
            if key == 'hidden':
                setattr(new_obj, key, getattr(old_obj, 'status') != 'enabled')
            else:
                setattr(new_obj, key, getattr(old_obj, key))
        self.session_new.add(new_obj)