N.Y. Comp. Codes R. & Regs. tit. 8, § 335.9
(a) A professional employee holding a term appointment or permanent appointment in professional title who is appointed to a different professional title at the same college, shall be given a probationary appointment in the different professional title.
(b) At any time during the probationary appointment, the appointing authority may require the employee to return to his or her former professional title and such action shall be accomplished as soon as practicable.