Where and how was the spline created? If you created it with lines, you'll have lines. I saw Excel spreadsheet, which leads me to think it's a bunck of point's (line segments) and not the physical "Spline" geometry. If you imported this from a Cad source, analyze it and see what you have. If it's line segments, you can recreate a spline from the endpoints of the lines.
If you can save the points in an ascii text file (.txt) as...
0.100,0.100,0.00
0.200,0.200,0.00
0.300,0.300,0.00
X,Y,Z points, You can use File Merge (or file open) and select the Ascii File type. Then tell it to bring it in as a spline.
Mike Mattera
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