After a jury has been drawn from Compartment A, the names, whether accepted or rejected for jury service, shall as soon as practicable, be placed in compartment B, and they shall remain in Compartment B until all the names have been exhausted in drawing juries from Compartment A. At that time, all names in Compartment B shall be returned to Compartment A, and thereafter juries shall continue to be drawn therefrom in the manner provided in this act until a new jury box is prepared.