You CANT switch back to the old invoices.  That was quite clear in the notice that went out.

I don't see how Intuit thinks removing basic items and features from their software is "better".  How smokes... this is embarrassing for Intuit...

"Welcome to our new improved invoices where we removed some of the most important features, and added nothing else!"

Sad...  Now you'll probably raise your prices after removing features.  lol