30.074 Regular appointee status.—When a deputy sheriff to whom the provisions of this act apply has served for a period of 1 calendar year, such deputy sheriff shall have attained regular deputy status in the office of the sheriff. Any deputy who is required to serve a probationary period attendant to a promotion shall retain regular status in the office of the sheriff, but may be returned to his or her prior rank during such probationary period without the right of appeal.