Notwithstanding clauses (x)(xii) of paragraph (2), the term employee includes any member of the Senior Foreign Service or any Foreign Service officer (other than a member or officer serving as chief of mission or in a position which requires appointment by and with the advice and consent of the Senate) and any member of the Foreign Service commissioned as a diplomatic or consular officer, or both, under section 312 of the Foreign Service Act of 1980.
This subsection does not apply to more than one period of leave in a prescribed tour of duty at a post outside the United States.
remains to the credit of the employee until used. The excess annual leave is reduced at the beginning of the first full biweekly pay period, or corresponding period for an employee who is not paid on the basis of biweekly pay periods, occurring in a year, by the amount of annual leave the employee used during the preceding year in excess of the amount which accrued during that year, until the employees accumulated leave does not exceed the amount allowed under subsection (a) or (b) of this section, as appropriate.
shall be restored to the employee.