The following classic invoice features are currently unavailable in the new experience...

So, then the new invoicing experience is a huge step backward in functionality, when compared to the old one, which itself is a huge step backwards from the QuickBooks Desktop functionality - in turn most of which is 20 years old (and works great)!

One wonders how far Intuit will go to make QuickBooks Online truly terrible. They've already done a lot and the new and terrible just keeps coming!