Save custome grading

[namlt33]

The custom grading should also save to assembly libray as well not just the components (or there maybe a separated library for grading). Also when i reimport data source of imported alignments the custom grading is wipe out and i have to readjust grading one more time for each data source changments. It like starting everything all over again from zero

[namlt33]

And also it really inconvenient when the coverage area can not laied on top of the corridor component road. When you create a big intersection it often come with severals traffic island which located right on top of the road surface. Take a lot of effort to make the grass inside the island since the coverage areas cant be used here