AI-List configuration for .ovh files

Hello,
I've been trying to add an AI vehicle to AI-List with atleast 2 liveries (repaints). This vehicle is tram, which sequence of files to work properly is bogie - body - bogie, not body - bogie - bogie. This causes a problem, where body model (ovh file with model) does not load CTI file (I suppose) and even it chooses other repaint it doesn't change the visual appearance. (I can see on the AI-List ingame that it is not #106 for example but #118.) I did change it to body - bogie - bogie (which is only for user vehicles, as this sequence with body - bogie - bogie won't work for AI only bogie - body - bogie) and it did change their appearance but as I said - it didn't work. How the ailist configuration file should look to make the other part of vehicle load CTI also? Do I need to change it from .ovh to .bus in order it to work?

Thanks from advance, I hope it's understandable.
Here is the ailist code:

[aigroup_depot_typgroup_2]
vehicles\[] Konstal_105\AI_105Na90_Dg.ovh
#106	106	#106
#116	116	#116
#118	118	#118
[end]