I started my QB VAT returns and accounting 01/04/2019 to comply with MTD. I've now added all invoices and bank details from 01/10/18 to 31/03/19 (01/10 is my annual accounting start date). These are now showing up as exceptions in the return for 01/04/20 to 30/06/20. The VAT returns/accounting prior to 01/04/19 was done outside quickbooks. How can I take into account the period prior to 01/04/19.

I can't seem to open any tax returns for the period from 01/10/18 to 31/03/19.

Any help would be appreciated.