non destructive breaklines

[dbrownsurvey]

I have an design surface and also have multiple surveyed existing ground surfaces that need to be pasted into the design surface for quantity calculations. I can't figure out how to hold the integrity of the design surface outside of these little existing ground surfaces. Outside of all my existing ground surfaces, the tin lines are interpolated to the next design tin line instead of keeping the design surface elevation. I've tried the non-destructive breakline approach and maybe I'm doing something wrong, i don't know. Any help would be appreciated.

thanks

[troma]

The non-destructive breakline need to be added first, then do the paste. (Or move the breaklines above the paste operation in the surface definition.)