Custom Liveries Not Showing Up In Timetable Or Scenario Planner Modes

Can someone please explain to me how do I use a custom livery that I’ve created in the timetable or scenario designer modes? Because i’ve created a livery for the newly added Class 377 and for some reason when I go to the custom scenario or even timetable modes it doesn’t list any liveries available for it.
Now I was originally thinking that it must be a bug with the train for today’s update but then I tried doing the same thing with the Class 483 and again the livery I created wasn’t showing in the same places.
So can anyone please tell me if I’m missing anything? Because I’m honestly not sure what to do.
Any help will be deeply appreciative.

 

its a bug DTG are aware of it

 

Todays update has wiped the east coast way Dlc from my game on xbox

 

Right okay fair enough, at least they know that it’s an issue and I hope it gets fixed soon. Thank you for making me aware

 

Same for me, it's SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO Annoying

 

Yeah same but for every train