Started my profile at 10+00. as it happens sometimes I need to go back 50 ft more.

Its been a while since doing profiles but I remember a method where I would just create another alignment and then sample that as a profile in the original profile view.

I evolved this method because my alignments usually have corridor model with proposed grading. Whenever I edit the geometry of an alignment that deep in design my grading model never wants to act normal again.

Any input or ideas?