Welcome to the Community forum, @kaadcock.
The prompt you're getting comes up when an existing invoice is attempted to change. It means if you tried to make some changes on the invoice but at the end, the invoice wasn't changed. It will still alert you if you'd want to leave the invoice without saving.
You can check these articles which you may find helpful:
I'm only a couple of clicks away if you need further assistance in managing your account. It's always a pleasure to help. Have a great day!
