clearing not possible either in FBRA or FB08

In a payment document we have 2 customer line items & one bank line item. Now I want to reverse that document. First I reset the clearing document through FBRA. while resetting out of 2 cleared line items only one line item only was reset by the system. Now I am not able to reverse the document either in FBRA or FB08. Because one line item is open & one line item was cleared. So its not allowing either in FBRA or FB08  please reply how to reverse this document.