(a) In General. These rules and any amendments take effect at the time specified by the Supreme Court, subject to 28 U.S.C. § 2074. They govern:
(1) proceedings in an action commenced after their effective date; and
(2) proceedings after that date in an action then pending unless:
(A) the Supreme Court specifies otherwise; or
(B) the court determines that applying them in a particular action would be infeasible or work an injustice.
(b) December 1, 2007 Amendments. If any provision in Rules 1-5.1, 6-73, or 77-86 conflicts with another law, priority in time for the purpose of 28 U.S.C. § 2072(b) is not affected by the amendments taking effect on December 1, 2007.