Projecting back of curb profile

Hello,

I have a video by Bentley of how to project the back of curb profile onto the main alignment profile. So I followed the steps and it works flawlessly in SS4 but in SS3 it is not propagating to the gpk. 

Note: Video is too large for me to attach here. Please send me an ftp, should you be interested in watching that video.

Please advise.