Jerry Bartels of Autodesk demonstrates the CREATEPROFILEFROMFILE command. How to create a Profile from an ASCII file with PVI Station, PVI Elevation, and optional Vertical Curve Length data.
From the Jerry's YouTube Channel.
and the Civil Immersion blog.
The CREATEPROFILEFROMFILE command really comes in handy when the raw ASCII data is what you have.
The file does NOT become a reference.
The Profile Geometry Editor also includes a way to input PVIs manually this way or better yet by copy and paste from an ASCII file.