27 C.F.R. § 19.115
(a) General. If there is a change in the list of officers, directors, members or managers that the proprietor filed as required by § 19.93 the following rules apply:
(b) Waiver. The appropriate TTB officer may waive the requirement to amend the registration if the change only relates to corporate officers listed on the original or current registration who are no longer connected with the operations covered by the registration.
(26 U.S.C. 5171, 5172)