(1) Regulations may modify the provisions of this Part and the First Schedule in their application in the case of persons who are or have been outside the State while insured under this Part.
(2) The modifications which may be made by regulations for the purposes of subsection (1) shall, in particular, include the deletion of "in the State" in paragraph 1 of Part I of the First Schedule.
(3) The provisions of this section are without prejudice to the generality of any other provision of this Part providing for regulations.