Cannot rename player's train (service name) in the scenario

[awaken1977]

Scenario editor doesnt allow me to rename the plaeyr's train - I believe because train name used in the script.
I edited train name manually - in ScenarioProperties.xml and in the lua script. Deleted and regenerated MD5 checksums. There's no old name used in the scenario. I checked scenario.bin too.
But it still shows old train name both in scenario editor (timetable view) and in the game. In scenario marker properties (big yellow thing) the train name is correct.
I deleted blueprints, restarted the game, it didn't help either.
The I deleted scenario cache too (SDBCache.bin) .

Nothing helps. Still old train name in timetable view and during playing of the scenario.
It doesn't affect gameplay, the scenario runs smoothly, but it's annoying. I cloned the scenario , and there's the same thing.

Where else it is cached?

[BoostedFridge]

Does this scenario use the 'rolling start' function?

If the user train is stationary at the start, its still possible the the 'rolling start' function was used. It can be used to prestart the AI trains in motion at scenario start. If so, that data is saved in a 'StartingSave.bin' file. Once the 'rolling start' save (control F2) is done, no subsequent changes to the scenario will save.