26 CFR §1.367(b)-12

1. (a)In general. This section applies to distributions with respect to, or a disposition of, stock—
   1. (1)To which, in connection with an exchange occurring before February 23, 2000, an amount has been attributed pursuant to § 7.367(b)-9 or 7.367(b)-10 of this chapter (as in effect prior to February 23, 2000, see 26 CFR part 1 revised as of April 1, 1999); or
   2. (2)In respect of which, before February 23, 2000, an amount has been included in income or added to earnings and profits pursuant to § 7.367(b)-7 or § 7.367(b)-10 of this chapter (as in effect prior to February 23, 2000, see 26 CFR part 1 revised as of April 1, 1999).
2. (b)Applicable rules. See § 7.367(b)-12(b) through (e) of this chapter (as in effect prior to January 11, 2001, see 26 CFR part 1 revised as of April 1, 2000) for purposes of applying paragraph (a) of this section.
3. (c)Effective date. This section applies to distributions or dispositions that occur on or after January 11, 2001.