Change the Orders screen to work more like Clients: When you click an order to view details, they slide over the screen to see details. Then when you close the order it slides back out of the way and you are still on the order screen. This allows you to keep any filters in place and still see the order details.

A change like this would help streamline the user experience so more aspects of the program behave in the same way making it easier to use and to train new users.