31 CFR §802.1002

1. (a)A determination under § 802.1001(a) shall take effect immediately upon publication of a notice of such determination under § 802.1001(c) and remain in effect unless rescinded under § 802.1001(b).
2. (b)A rescission of a determination under § 802.1001(b) shall take effect on the date specified in the notice published under § 802.1001(c).
3. (c)A determination under § 802.1001(a) does not apply to any transaction for which a declaration or notice has been accepted by the Staff Chairperson under § 802.403(a)(1) or § 802.503(a), respectively.
4. (d)A rescission of a determination under § 802.1001(b) does not apply to any transaction for which:
   1. (1)The completion date is prior to the date upon which the rescission of a determination under paragraph (b) of this section becomes effective; or
   2. (2)Before publication of the rescission of determination under § 802.1001(c), the parties to the transaction have executed a binding written agreement, or other binding document, establishing the material terms of the transaction that is ultimately consummated.