; and (ii) if the Commission determines that other provisions of this Act or the amendments made by this Act reduce liabilities or increase revenues of the Postal Service, the Commission shall incorporate those changes into the calculations of the Commission. (C) Consideration of underwater products study After completing any supplementation and modification of the record under subparagraph (A) of this paragraph and quantifying the impact of operational decisions under paragraph (2)(B), the Commission shall— (i) take into account the impact quantified under paragraph (2)(B) and modify, if appropriate, the record under subparagraph (A) of this paragraph; (ii) incorporate the findings of the study under paragraph (2) into any subsequent adjustment to rates for underwater products identified under subparagraph (A) of that paragraph; and (iii) (I) account for the cultural and informational value that underwater products identified under paragraph (2)(A) have to the mail; and (II) recognize that— (aa) the services provided by the Postal Service have changed over time; and (bb) the timely delivery of the underwater products identified under paragraph (2)(A) impacts the overall value of those products. (4) Subsequent review required if initial review completed before enactment If, on or before the date of enactment of this Act, the Commission completes the initial rate regulation review, the Commission— (A) shall determine whether to— (i) further modify the system for regulating rates and classes for market-dominant products established under section 3622 of title 39, United States Code; or (ii) adopt an alternative system for regulating rates and classes for market-dominant products; and (B) in making the determination under subparagraph (A), shall— (i) take into account the provisions of this Act and the amendments made by this Act; (ii) comply with the requirements under clauses (i) and (ii) of paragraph (3)(B)