6. Where a copy of a local or central rating list has been sent to a charging authority or Secretary of State under section 41(5) (local lists) or 52(5) (central lists) of the Act and the valuation officer alters the list before it comes into force–
(a)the officer shall inform the charging authority or Secretary of State to whom the copy was sent, and
(b)the authority or the Secretary of State, as the case may be, shall alter the deposited copy accordingly.