On the browser version we need a way to add a shipping address to the invoice. It's not practical to do it by the current method.
For example, in the building and construction trade, when we supply and install to a new home build we need to refer to that site address when we invoice the Builder. It's usually a "one off" transaction so the shipping address will change every time we do work for the Builder.
This has been requested since the browser version was launched and still has not been fixed yet AR lets you do it. So if you are wondering why people won't move their business to the browser version, it's things like this that are frustrating and time consuming and make using the browser version pointless.