Adding the same contour polyline to a surface multiple times

Is there any detrimental effect to adding the same polyline contours to a surface multiple times?

I'm sure the question would arise as to why a person would want to do that... Here's an example - I have a surface that was initially made from polylines. Then it was added to over here. Then tweaked over there, etc.

Now, it's difficult to determine which are the "new" polyline contours and which ones are already included in the surface without an extensive comparison. So the question is, is there any harm in adding -all- the polylines to the surface again?

Thanks.

uhm.... i would expect a drastic slowdown in performance, and a greatly increased rick of error, crashes, and hangs while c3d tried to calculate using a a lot of redundant duplicated data.

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Originally Posted by cadtag

uhm.... i would expect a drastic slowdown in performance, and a greatly increased rick of error, crashes, and hangs while c3d tried to calculate using a a lot of redundant duplicated data.

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Bingo... That's exactly what I'm experiencing. To carry the thought further, it was suggested I simply remove all additions of contour polys from the definition and add them fresh, so to speak. My thinking is that approach would trash any and all edits. This is an older job and nobody wants to reinvent the wheel on it...

So the bottom line is multiple adds is no bueno.

Have you tried locking the surface>, isolating all polylines>, deleting them all>, extract polylines from surface.
It may work and would clean up alot of unused polylines.

Regards
Alex