4(1)Any reference (express or implied) in this Act, another enactment or an instrument or document to a rewritten provision is to be read as including, in relation to times, circumstances or purposes in relation to which any corresponding superseded enactment had effect for relevant tax purposes, a reference to the superseded enactment so far as applying for those relevant tax purposes.U.K.
(2)Any reference (express or implied) in this Act, another enactment or an instrument or document to—
(a)things done under or for the purposes of a rewritten provision, or
(b)things falling to be done under or for the purposes of a rewritten provision,
is to be read as including, in relation to times, circumstances or purposes in relation to which any corresponding superseded enactment had effect for relevant tax purposes, a reference to things done or falling to be done under or for the purposes of the superseded enactment so far as applying for those relevant tax purposes.