Address Editing
This works really well from what I have observed. During integration I have noticed Edit Orders directly modifies the addresses in the order table. This makes complete sense as changes a customer may make to their address book will not affect the address information supplied for the order (also supports better order address history).

Request
However it would be "nice" to have the option of selecting an address from the customer's address book to overwrite these fields. This would save some administrative time if the customer contacts the store to change the shipping address of the order (prior to the order shipping). I'm sure there are a few other cases where this could be useful.

Scenario
  1. Customer (or admin) places an order.
  2. Customer receives confirmation email and notices they have the wrong address.
  3. Customer updates address in their address book.
  4. Customer contacts store and requests the order be sent to the updated address.
  5. Order Manager updates shipping address on the order (if not already shipped).

Notes
This is just a feature request, not a bug / issue. The current Edit Order module already supports changing the addresses for the order by manually typing in the new address information. It would just be nice in some cases to also be able to select the new address from the customer's address book.