Why are settle invoices showing in the debtors account?

Hello there, @Dazman.

Let me provide some details regarding the Debtors account in QuickBooks and help you from there.

All invoices or receivables transactions that are settled or not will always display in the Debtors (Account Receivable) account. These track transactions related to customers who owe you money and invoices that are unpaid.

Also, please know that sales receipts won't show in the account since it's a real-time transactions and not a receivable.

To properly use this account, I suggest seeking help with your accountant for more guidance. He/she may add suggestions based on what's more suitable for your business and to your books.

You might want to check out this article to understand more about the Chart of Accounts: Understand the chart of accounts in QuickBooks.

Please touch base with me here for all of your QuickBooks needs, I'm always happy to help. Have a good day.