Operationally, you should be able to load any saved profiles, and the LT should perform the same for you as your XT.
If you are asking will you be able to transfer the LCD screen from the XT to the LT to make it an XT, I believe that is a yes also.
If you examine your current device you should be able to remove the 4 retaining screws from the display panel and separate it from the main board by pulling on the left side where the connector is.
The aquasuite automatically recognizes an XT with the screen removed as an LT, and I assume the reverse is also true.