Updated tax table but employees paid already for last week

Hi, I pay my employees weekly and the last pay date was on 18th October. This new tax update commences from 13th October. I am guessing I need to

1) download and install the new tax tables

2) unlock the employee payslip and manually change the tax amount, which may/may not be different

3) do the next weeks payslip ie 28/10 so I know how much to alter the last payslip by.

4) send a full file replacement STP for the previous payweek done on the 19/10

5) once that is successful, send in the new payrun STP for the pay on 28/10.

6) make any +/- $ changes to the pays to be sent to employees on 28/10.

Can you please confirm the above process is the correct way to go before I start doing anything.

Thanks