(2) The current entrance register shall be headed by the names of persons who have been regular employees and who were laid off from their positions for reasons other than fault or delinquency on their part. The current promotion register shall be headed by the names of persons who have been regular promoted employees and who were demoted from their positions for reasons other than fault or delinquency on their part. The order of the names of such persons shall be such that the name of the person who was last laid off or demoted is first on the register.
(3) Only one entrance register and one promotion register shall exist at any time for each grade and classification in the civil service. No promotion register shall be canceled unless it has been exhausted or has been in existence for at least 30 months. The entrance register shall not be canceled unless it has been exhausted or has been in existence for at least 12 months. [1959 c.252 §30]