6N.I.In the case of a beneficiary whose interest arises under a will or codicil made before the commencement date or on the death before that date of an intestate, section 1 of this Act shall not affect the meaning of “infant” in section 38 of the Administration of Estates Act (Northern Ireland) 1955 [1955 c.24] and the words “twenty-one” in subsection (5) of the said section 38 shall have effect as if that section had not been included in Schedule 1 to this Act.