I have up graded my Bachmann DCC E-Z command to a Bachmann Dynamis system with pro box and extra controller, and had issues with assigning loco address on my walthers/proto e8's with Tsunami sound ( changing from address 1 to 9) went through the process but still on address 1... I found a work around used my old E-z command controller and programmed the address using that controller and it worked, the dynamis see's the new address