Any county which has provided the notice specified in Section 31894.1 shall provide a vote of the affected members, the results of which shall be advisory to the board of supervisors. The board of supervisors may, following the advisory vote, cancel their notice of intent to withdraw from social security at least 30 days prior to the effective date of termination of coverage under the federal system.

Nothing in this section shall be construed to waive any rights that employees may have to secure by appropriate judicial proceeding new benefits comparable to those provided under the federal social security system.