15. Where, before the date on which this section comes into operation—

(a) a firearm certificate was granted by a superintendent falling within the definition of “issuing person” in section 1 of the Act of 1925, then on or after that date, the superintendent falling within that definition as amended by section 4(1), shall, where required for the purposes of the application of section 5(1) of the Act of 1925, be deemed to be the person who granted the firearm certificate referred to in that section,

(b) a certificate referred to in section 5A(1) of the Act of 1925 was granted by a superintendent falling within the definition of “issuing person” in section 1 of the Act of 1925, then on or after that date, the superintendent falling within that definition as amended by section 4(1), shall, where required for the purposes of the application of section 5A(1) of the Act of 1925, be deemed to be the person who granted the certificate referred to in that section, and

(c) a decision was made, or deemed to have been made, by a superintendent falling within the definition of “issuing person” in section 1 of the Act of 1925 that was appealed, whether before or after that date, under section 15A(1) of the Act of 1925, then, on or after that date, the superintendent falling within that definition as amended by section 4(1) shall, where required for the purposes of the application of subsections (3)(b) and (4) of the said section 15A, be deemed to be the person who made the decision referred to in that section.