Hello there, @graeme-robertson.
I found some duplicate posts for this exact query you posted. My colleague, JamaicaA, has already answered a similar question you've posted. You can view her answer through this link: https://quickbooks.intuit.com/learn-support/en-uk/banking/re-hi-i-need-to-go-back-to-1-11-20-on-my-q...
Also, you can always visit our Help articles page for future reference. There, you can read articles that'll guide you in your future tasks.
If there's anything else I can do for you, let me know by commenting below. I'd be happy to further assist you. Have a great day!