Thanks for joining the Community and getting involved with this thread, 9686AL.

When creating/editing invoices, if you enter service dates, regardless of your line item order on the invoice creation/editing screen, your dates will be sorted in a descending order with the oldest date first, and newest date at the bottom of your list.

Here's an image showing how I created an invoice:

Notice that my first line item's service date is set to 5/10/2023. The second item has a date of 4/18/2023, and my third item is dated 3/14/2023.

Once I save the invoice that way, and view it as a PDF by choosing to Print it, my service dates are then reordered in a descending order, from oldest to newest.

You'll want to be aware that on your invoice creation/editing screen, the dates will still appear as you originally entered them, while the PDF will display them in the resorted order.

To verify my understanding, are your dates not sorting in a descending order from oldest to newest on the PDF version of your invoice like they should be?

I'll be looking forward to your response. Have an awesome Tuesday!