S&C headcode For the class 40 & class 37 are not working

[TRAINZ2023TIE]

I use TRS19 I tried to change them but it won't work can some please offer some solutions

 

[Paulsw2]

I've noticed the same issue.

 

[TRAINZ2023TIE]

I have also notices That the models for me at least are faulty as the couplers are invisible on TRS19