Refunds for missing transactions?

Hi there, @flutter-styles. 

Thank you for reaching out to the Community. Currently, the refund transactions is unavailable in QuickBooks Self-Employed. However, we can manually add transaction to record the refund. I'll show you how. 

1. Select Transactions from the sidebar menu.
2. Click the Add transaction button. 
3. Enter the necessary information.
4. Select the appropriate category.
5. Hit Save when you're done. 

I've added article for your reference: Manually add transactions in QuickBooks Self-Employed. 

Please let me know in the comment section below if you have any other questions. I'll be always around here in the Community ready to help. Have a great day!