When I use the DB BR 425 in the preserved HRR dlc in TSW2 there is no Sifa warning icon on the HUD. Checking a YouTube video from TSW2020 there does appear to be a Sifa HUD icon there, so this looks like something that was in TSW2020 but is not in TSW2. I realise this is not game breaking as you can use the Sifa light on the train dashboard, but it is more a quality of life issue as I can see the HUD indicator a lot easier. The icon for the DB BR 422 works fine it should be noted.