4.6. Values not transmitted from CGI
The following variables are never copied from CGI:
mv_todo mv_todo.submit.x mv_todo.submit.y mv_todo.return.x mv_todo.return.y mv_todo.checkout.x mv_todo.checkout.y mv_todo.todo.x mv_todo.todo.y mv_todo.map mv_doit mv_check mv_click mv_nextpage mv_failpage mv_successpage mv_more_ip mv_credit_card_number mv_credit_card_cvv2
You can define more with the FormIgnore catalog.cfg directive.