Road Number 99 731 has been in use in the DRG version for a long time on the Zittau Narrow Gauge Railroad. In contrast to the other locomotives, this unit was returned to its Era II look by the employees of the SOEG, and it runs mainly pulling the German State Railroad train. A highlight on the Zittau Narrow Gauge Railroad is the annual major event „Historik Mobil“ / "Travelling History", on the occasion of which road number 99 731 was also in use in the light gray photo paint scheme. It was thus the centerpiece of the event, and it was remembered for a long time by many railroad fans. At the “Hobbymesse Leipzig” trade fair in September 2024, the locomotive was finally designed by artist Michael Fischer-ART with one of his colorful motifs.