A composition shall not be binding on the separate creditors of the spouse of the insolvent concerned; but upon the acceptance of the offer of composition the property or, if it has been realized, the proceeds of the property of that spouse shall be restored to her or him, without prejudice to the claims of the creditors of that spouse or to any right of preference of any of them at the time when the property was vested in the trustee: Provided that any movable property held as security by any such creditor when the property was vested in the trustee shall be restored to that creditor; and provided further that the proceeds of any security whatsoever which has been realized shall be paid to the person or persons entitled thereto, according to their rights.