Proposed Profile

Trying to create a proposed profile using an existing alignment.  The existing alignment has a profile showing the existing grade.  Attaching the existing alignment and terrain in a new file and I cannot show the existing profile.  In the existing alignment file when I create a proposed profile it converts the existing alignment to a proposed alignment.  How can I create a proposed profile and not change the existing alignments Features, or have the proposed show as existing profile feature.  Not sure the best way to proceed with this.

 

Power Geopak SS10, 08.11.09.918

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