6(1)Where regulations cease to have effect under paragraph 4(2) or (3), the following provisions apply to an instrument that—U.K.
(a)was executed at a time when the regulations were in force, and
(b)was at that time chargeable with any amount of stamp duty with which it would not have been chargeable apart from the regulations.
(2)If the instrument was stamped while the regulations were in force, nothing done in pursuance of paragraph 5 (repayment of duty etc.) prevents it being treated for any purpose as duly stamped in accordance with the law in force at the time when it was executed.
(3)If the instrument was not stamped while the regulations were in force, the law in force at the time when it was executed shall be deemed to have been what the law would have been apart from the regulations.