Thanks for joining the thread, @WestfieldAV_Com.

Once you create or edit an invoice, you'll get a prompt "Do you want to leave without saving?". This is one of the basic features in QuickBooks that will help you save changes in case you've accidentally closed the window. 

If you haven't made any alterations but still getting this prompt, run some basic troubleshooting steps to address the issue. Sometimes too much cache build-up in your browser can cause unexpected behavior with the product. 

To start, open your account in a private window. This way, we can isolate the problem and fix it. Simply press the following shortcut keys to open this mode:

• Ctrl + Shift + N (Google Chrome).
• Ctrl + Shift + P (Firefox).
• Control + Option + P (Safari).

If you're able to exit the invoice window without getting a prompt, go back to your regular browser and clear its cache. If you're still getting the same result, try using a different supported browser. This could be a temporary issue with QuickBooks and the current browser that you use.

I'm also including our Help articles for related references in managing your account and transactions.

The Community always has your back, so please let me know if you have any other questions. I'll be more than happy to help. Keep safe.