17 C.F.R. § 190.07
(a) Transfer rules. No clearing organization or self-regulatory organization may adopt, maintain in effect, or enforce rules that:
(3) Interfere with the acceptance by its members of transfers of commodity contracts, and the property margining or securing such contracts, from a futures commission merchant that is a debtor as defined in § 190.01, if such transfers have been approved by the Commission, provided, however, that this paragraph (a)(3) shall not—
(b) Requirements for transferees.
(2) Any transferee that accepts a transfer of open commodity contracts from the estate of the debtor—
(ii) If the commodity contracts were held for the account of a customer:
(4)
(c) Eligibility for transfer under section 764(b) of the Bankruptcy Code—accounts eligible for transfer. All commodity contract accounts (including accounts with no open commodity contract positions) are eligible for transfer after the order for relief pursuant to section 764(b) of the Bankruptcy Code, except:
(5) No prejudice to other customers. No transfer shall be made under this part by the trustee if, after taking into account all customer property available for distribution to customers in the applicable account class at the time of the transfer, such transfer would result in insufficient remaining customer property to make an equivalent percentage distribution (including all previous transfers and distributions) to all customers in the applicable account class, based on—
(e) Prohibition on avoidance of transfers under section 764(b) of the Bankruptcy Code—(1) Pre-relief transfers. Notwithstanding the provisions of paragraphs (c) and (d) of this section, the following transfers are approved and may not be avoided under sections 544, 546, 547, 548, 549, or 724(a) of the Bankruptcy Code:
(ii) The transfer, withdrawal, or settlement, prior to the order for relief at the request of a public customer, including a transfer, withdrawal, or settlement at the request of a public customer that is a commodity broker, of commodity contract accounts or customer property held from or for the account of such customer by or on behalf of the debtor unless:
(2) Post-relief transfers. Notwithstanding the provisions of paragraphs (c) and (d) of this section, the following transfers are approved and may not be avoided under sections 544, 546, 547, 548, 549, or 724(a) of the Bankruptcy Code:
(f) Commission action. Notwithstanding any other provision of this section (other than paragraphs (d)(2)(ii) and (d)(5) of this section), in appropriate cases and to protect the public interest, the Commission may: