Setting up cash vat - Migrating from Sage

Migrating historical transactions from sage into Quickbooks - there's not many.

YE is 31st Jan, so wish to post all 12 months of transactions into Quickbooks from 1st Feb 2025 to 31st Jan 2026 to create one full year data in the accounts, in addition to the 1st Feb 2025 opening balance journals.

(The cash VAT qtrs align with year end).

Obviously the historical (cash) qtr vat returns have been submitted, so when setting up vat in Quick Books, I do not want to re-submit the four qtr returns for the periods to 31st Jan 2026. How would this be supressed in quickbooks ? Is it a case of not initially setting up MTD, then later, when I wish to submit VAT for the period 1st Feb 2026 to 30th April 2026, going back into VAT to set up MTD ?

Also, in sage I would run VAT then post a vat journal - is this how it works in Quickbooks, or are VAT journals posted automatically whenever vat is run ?

thanks