- go into your QuickFile account settings and temporarily turn off the MTD and online VAT filing options
- prepare a new VAT return for the rolled-back quarter, apply any manual adjustments you need to make the figures match what you originally submitted, and “save” this return without submitting it online
- switch online filing and MTD back on again
In other words turn off Mtd and online VAT filing options. Then prepare and save the return. Then switch it all back on.