With the change of timetable on december 10, 2023, on the Oberalp pass line of the Matterhorn-Gotthard-Bahn (MGB) from Andermatt to Disentis, the new "Orion" trains from StadlerRail have taken over all regional services. ABeh 8/12 # 310 and # 309 in multiple control are running the R45 service 839 from Disentis to Andermatt, crossing the Strem viaduct between Sedrun and Rueras.