Section 22.5 - Futures commission merchants and derivatives clearing organizations: Written acknowledgement(a) Before depositing Cleared Swaps Customer Collateral, the futures commission merchant or derivatives clearing organization shall obtain and retain in its files a separate written acknowledgement letter from each depository in accordance with §§ 1.20 and 1.26 of this chapter, with all references to "Futures Customer Funds" modified to apply to Cleared Swaps Customer Collateral, and with all references to section 4d(a) or 4d(b) of the Act and the regulations thereunder modified to apply to section 4d(f) of the Act and the regulations thereunder.(b) The futures commission merchant or derivatives clearing organization shall adhere to all requirements specified in §§ 1.20 and 1.26 of this chapter regarding retaining, permitting access to, filing, or amending the written acknowledgement letter, in all cases as if the Cleared Swaps Customer Collateral comprised Futures Customer Funds subject to segregation pursuant to section 4d(a) or 4d(b) of the Act and the regulations thereunder.(c) Notwithstanding paragraph (a) of this section, an acknowledgement letter need not be obtained from a derivatives clearing organization that has made effective, pursuant to section 5c(c) of the Act and the regulations thereunder, rules that provide for the segregation of Cleared Swaps Customer Collateral, in accordance with all relevant provisions of the Act and the regulations thereunder. 77 FR 6371 , Feb. 7, 2012, as amended at 77 FR 66334 , Nov. 2, 2012