Chapter 9 (commencing with Section 12520) and Chapter 10 (commencing with Section 12530) of the new law shall apply to transactions consummated by a subject corporation on or after January 1, 1984, unless the approval required by the prior law has been given prior to January 1, 1984, or has been given on or after January 1, 1984, at a meeting of members initially called for a date prior to January 1, 1984, in which case the transaction shall be governed by the prior law.