; and (B) procedures, promulgated in consultation with the Thrift Savings Board, under which a transfer may be made from such account to the Office of Personnel Management. (3) Solicitation of payroll information Such regulations shall include— (A) guidance for agencies employing law enforcement officers for proper retention of payroll information required to carry out the amendments made by subsection (a) and (b), including, for each creditable year of service, the difference between the amount the law enforcement officer received in gross compensation and the amount that would have been received as gross compensation but for the application of the premium pay caps in section 5547 of title 5, United States Code