That ought not be. I've already tried it and the lights worked as usual for me. Did you try all the versions of the Gavril... old version, new facelift, to see if one works but the other one doesn't? What about other Gavrils-- D'series, Barstow, etc? Is it all lights on the vehicle... or just headlights that you're referring to? Hate to sound like a broken record restating the obvious, but did you clear cache, double check integrity of the files, etc? I hope you don't have to do a full reinstall... that's only as a last resort. I hope you can find your solution long before that.
Update on this, you need to change the fenders and bonnet to the facelifted variants if youre changing fascias. Not changing the fenders gives the illusion of the old headlights being inside the new ones.