Updated service item rates not showing up on unbilled charges report

I have some information that I want to provide as to why this is happening, HAHolloway.

Once you run a report, QuickBooks always uses the real-time rate of your service items. Any changes or updates to newer rates won't affect your older transactions. The new rate will only reflect if you create a new delayed charge transaction moving forward. 

You'll want to click the amount on the report to manually update the rate directly to the unbilled charges and for the new rates to show up. I've got his screenshot for reference:

Furthermore, QuickBooks provides several reports that give you different snapshots of your business. Learn how you can customize them so you'll get the data you need most. For more information, go through this article for more details: Customize Reports In QuickBooks Online.

Let me know if you have any other concerns about unbilled charges or when running reports. I wish you continued success with your business. Have a good one.