Welcome to the Community, @hellojoea. Thanks for sharing your experience about how the invoice file name appears when you opt to download and save it on your computer.
I understand that it isn't convenient for you to rename it every time. However, that's the best option to do at the moment. I will take note of your suggestion and will share this with our engineers. I'm sure they will take a look at our suggested plan carefully and may consider this in the next future updates.
In the meantime, I'm encouraging you to visit our QuickBooks blog site for more information about the current event and new product enhancements.
Just in case you want to get paid quicker with your invoice, I'm adding this help article as your reference: Let your customers pay invoices online.
Let me know if you have additional questions, @hellojoea. I'm always around here to help.
