For the purposes of transitional cases, where a person, to whom regulation 17(1) (transitional awards of long-term incapacity benefit) or regulation 17A (awards of incapacity benefit in cases where periods of interruption of employment and periods of incapacity for work link) applies, has been determined in accordance with regulation 13A of the Social Security (Incapacity for Work) (General) Regulations 1995 to have become a welfare to work beneficiary, section 30C(1)(c) of the 1992 Act (any two periods of incapacity for work not separated by a period of more than 8 weeks shall be treated as one period of incapacity for work) shall have effect as if for the reference to 8 weeks there were substituted a reference to F2104 weeks.