I can see that you posted a similar question in the Community forum, @SB8.
Please refer to the response posted by my peer @JoesemM. Here's a direct link to access it: https://quickbooks.intuit.com/learn-support/en-us/reports-and-accounting/we-have-invoiced-in-gbp-rec...
Also, you can read through our great Community resource for more insights about managing invoices in QuickBooks Online. Feel free to explore the Income and expenses section of this help article for more details: QuickBooks Help article.
Leave a comment below by hitting the Reply button if you have more questions. Take care and stay safe.