Sec. 5.03. TERMINATION OF GROUP B MEMBERSHIP. (a) Group B membership, whether by voluntary application or as a condition of employment, may be terminated by the Group B member only when the person ceases to be on active service.

(b) Once a police officer or fire fighter becomes a Group B member, whether by voluntary application or as a condition of employment, the person may never transfer the membership to become a Group A member and may never transfer the membership to any pension plan for police officers and fire fighters that may be created in the future unless the terms of that plan allow the transfer.

(c) A Group B member who is on active service and was a former contributing member of either the old plan or Plan A may elect, when applying for either a retirement or disability pension if applicable, to terminate membership and receive a Group A retirement or disability pension under the applicable provisions of this article, if the Group B member's application for retirement or disability pension is granted by the board.

(c-1) A Group B member who is not on active service and was a former contributing member of either the old plan or Plan A may elect, when applying for a retirement pension, to terminate membership and receive a Group A retirement pension under the applicable provisions of this article, if the Group B member's application for retirement pension is granted by the board.

(d) If a Group B member described by Subsection (c) or (c-1) of this section has elected and been granted a Group A retirement or disability pension under the applicable provisions of this article, the person is entitled to a reimbursement from the fund. The reimbursement shall be equal to that portion of the person's contributions to the fund, without interest, from the person's effective date of Group B membership until the time the person left active service that is in excess of the total amount the person would have contributed as a Group A member or as a member of the old plan or Plan A for the same period. A Group B member desiring a refund of excess contributions must make written application for the refund with the executive director within three years after the date the person's Group A retirement or disability pension, whichever is applicable, begins, otherwise, the person will lose all right, title, interest, or claim to the refund until such time as the board grants the refund in response to the person's written request. The refund shall be made as soon as practicable after written application is filed with the executive director.