Thanks for joining us today, @nagolsteyn.
I have some information about how to retrieve your deleted invoices. Let's go to your Audit Log to see it.
- Go to Gear at the top, then select Audit log.
- Locate the deleted invoice, then click the View link under History.
- Tick the drop-down arrow beside the date to view the invoice details. See the attached screenshots below or steps 2-3.


After viewing the details, go back to creating your invoice again. Need more details? Check out this guide: Use the audit log in QuickBooks Online.
In case you need more help about invoices, you can check out this link. This will route you to our general income and expenses topics with articles.
If you still have questions and concerns, please don't hesitate to let me know. I'm always here to assist you. Take care and have a nice day ahead.