Maryland State Personnel and Pensions Section 22-212

      On or after January 1, 2005, an individual who is a member of the Employees' Retirement System or the Teachers' Retirement System may not transfer membership to the:

            (1)      Employees' Pension System, if the individual is a member of the Employees' Retirement System; or

            (2)      Teachers' Pension System, if the individual is a member of the Teachers' Retirement System.