This section applies to a member who: on or before June 30, 2011, is subject to the Alternate Contributory Pension Selection; is separated from employment for 4 years or less; is separated from employment for military service that meets the requirements of the federal Uniformed Services Employment and Reemployment Rights Act; and resumes employment within 1 year of leaving military service in a position that is included in the Employees’ Pension System or Teachers’ Pension System; or is separated from employment with the minimum eligibility service needed to be eligible for a vested allowance in the Alternate Contributory Pension Selection under Title 29, Subtitle 3 of this article; does not withdraw the member’s accumulated contributions; and does not become a retiree. A member described in subsection (a) of this section who resumes employment in a position that is included in the Employees’ Pension System or Teachers’ Pension System, shall resume participation in the Alternate Contributory Pension Selection if the employer participates in the Alternate Contributory Pension Selection.