With the extension of DRA to Leipzig, the grey S-bahn BR1442 of Rapid Transit can be used on this extended route. So I suppose DTG revisited Rapid Transit and gave it some love by fixing bugs (derailment for example) and also change the sound of the BR1442, so it's the same sound as the red BR442. Or if they didn't they revisited Rapid Transit, shouldn't the BR1442 being included in Dresden - Leipzig with the correct sound? Or I'm just asking to much now and should we accept two versions of the same train on the same route but with different sounds?