When you reverse a horizontal alignment, Civil 3D does not reverse the vertical alignment, this is a known issue in Civil 3D. Devotech developed a workflow to reverse the vertical alignment.
Go to Toolbox - Reports Manager - Profiles and select the PVI_Station command:
Copy PVI data from the text file to a tabular Editor (Open Office Calc, MS Excel):
The PVI data in Excel:
Replace the “+” sign with “nothing” in the chainage column:
The result without a "+" sign:
In open columns on the side, subtract the end station from the chainage and multiply it by "-1" (this step reverses the chainage values):
Clean up the sheet to only display the Station, Elevation and Curve Length columns. Remove the column headings:
Sort data by the first column so the chainage increases from top to bottom:
Save the Excel spread sheet to a .csv file:
Change the .csv extension to .txt, open the file in Notepad and replace the comma with a space:
The resulting file (save it and close it):
Import the profile from the .txt file:
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