Hello there, 7399socks.

Thanks for joining this conversation. Allow me to jump in and help ensure this is taken care of for you.

I can see how having the ability to sort invoices with service dates would be helpful for you and your business. While this isn't available yet, I highly suggest sending feedback directly to our product engineers. They're always looking for ideas to consider on how to improve QuickBooks Online (QBO).

Here's how to submit feedback:

1. In QBO, go to the Gear icon at the top, then Feedback.
2. Enter your comments or product suggestions. Then select Next to submit feedback.

You can track feature requests through the QuickBooks Online Feature Requests website.

In case you need it, I'll add this article that tackles customizing invoices and other sales forms in QBO for more information: Customize invoices, estimates, and sales receipts in QuickBooks Online.

I also recommend visiting our website for more tips and other resources you can use in the future: Self-help articles.

Please post again in the Community or leave a comment in this thread if you have more questions about invoices or anything else. I'm always here to help. Take care.