Good evening, @Jenhdavis.
Congrats on making your first post here in the Community. Allow me to share some insight into editing your closed books.
You can delete the invoice that's in your closed books. However, you'll receive a warning message and require you to enter a password before doing so.
Review this guide for additional information: Close your books in QuickBooks Desktop.
It's that easy! Feel free to come back if you need any more assistance. Have a wonderful day!
