California Code, Financial Code - FIN § 31952

(a) The old law shall continue to apply with respect to matters relating to the rights and obligations of such members with respect to such old corporation and to matters relating to the rights and obligations of such old corporation with respect to such members, so long as any of such members continues to be a member of such old corporation; provided, however, that, notwithstanding any provision of the old law to the contrary, any member of an old corporation may withdraw from membership in such old corporation by giving to such old corporation written notice of its intent to withdraw from membership in such old corporation not less than 10 days before the date on which it intends to withdraw from membership in such old corporation, which date shall be specified in such notice, and the withdrawal of such member from membership in such old corporation shall be effective on such date.

(b) No person shall, on or after the effective date of this division, become a member of such old corporation.