Each Grantor hereby covenants and agrees with the Administrative Agent and each other Secured Party that it shall not close or terminate any Pledged Investment Account unless the funds or other assets therein have been transferred to another Pledged Investment Account or a successor or replacement account has been established with respect to which successor or replacement account a control agreement has been entered into by the appropriate Grantor, the Administrative Agent and the securities issuer, intermediary or depository institution at which such successor or replacement account is to be maintained in accordance with the provisions of Section  4.3.4(c) .