Unless prior service has been transferred or unless a combined service annuity under section 356.30 has been elected, an employee who becomes a member after being a member of the Public Employees Retirement Association or the public employees police and fire fund is covered under section 353.34, subdivision 3, with respect to that prior service. An employee who becomes a member of the Public Employees Retirement Association or the public employees police and fire plan after being a member is also covered under section 353.34, subdivision 3, with respect to that prior service, unless calculated under section 356.30.