MIAMI - Marshall & Ilsley Bank (M&I), Great Western Bank (GWB), Commerce Bank N.A. and Associated Bank N.A. on Aug. 2 became the latest banks to exit a multidistrict litigation in which class members allege that banks manipulated the order of debit card transactions to maximize checking account overdraft fees litigation when a federal judge in Florida approved settlements between the banks and classes of customers (In Re: Checking Account Overdraft Litigation, No. 09-md-02036, S.D. Fla.).