Update address on previous payslips

At the moment, when we update an address for an employee and produce a previous period's payslip it still shows the old address. Even if we re-open the period after the address has been updated, finalise again and produce the payslip again it still shows as the old address.

This really doesn't work well for employee's who have not notified of a change of address and urgently need the correct details to show for things such as mortgage applications.