Hey, sorry for the delay:
Any luck so far?
You should really compare your current files to your backups to see the differences. Remember that mine are both a different VO than yours and somewhat modified.
Good luck and let me know if you need anything else.
I just found another a part of translated CAS module that explains what the _1, _2, _3 and _4 at the end of the settings mean: they're linked to the keys.
So the settings I gave you (SEL_ZV_SENDER_x) correspond to each one of four keys along with the initialization setting for activating the selective central locking feature (ZV_SELEKTIV). Which explains why only my _1 changed. Always learning something new.