Those of us that use the rate calculator will notice how it's usefulness has been gutted in the new layout. Not only this but the drop down menu for each order for service and package no longer allows you to see all the choices. According to support the only way to see the choices for USPS flat rate, regional rate, etc are to use the rate calculator outside the order screen. This is the one where you manually enter all data to get a rate idea, then have to find your order and manually apply it.
The legacy layout showed ALL options in the rate calculator along with ALL options in the drop down on a per order basis. There is no longer a simple and efficient way to add USPS Flat Rate or Regional Rate options to your orders. Please add these back to the rate calculator or at the very least make them options in the drop down for each order.