After a certain period, you won't be able to lodge BAS forms for a previous year using that year’s module (i.e. GA, GB, GI and GR forms).
To lodge a previous year’s BAS form, create the form in a year that has PLS Activity Statement menu.
Change the year period.
Select the client.
Select New, then PLS Activity Statement and the Activity Statement form required.
Enter the reporting period.
Enter the ABN branch number, if required.
Go to Tools and Load values from PLS. This will force the software to prefill the form for the reporting period.
note
The Australian Taxation Office (ATO) removed 1H from the electronic BAS form. They've advised that tax agents will need to ledge the form on the tax agent portal to report for the GST installments.