History does not work with 2 rail sweep

Hello All,
I can’t understand why history doesn’t work with 2 rail sweep. I can get it to work with a 1 rail sweep, but I prefer the results with 2 rail sweep. I will upload the curves that I am using.
Thanks in advance,
Frank T

curves for 2 rail sweep.3dm (59.7 KB)

Version 5 SR9 64-bit
(5.9.40609.20145, 6/9/2014)

Hi Frank- it works fine with History here. What sort of editing are you doing on the setup? That is a lot of cross section curves…


The only editing I did was crv rebuild. How many cross sections would you suggest?

Please forget I brought this up. It was a stupid mistake on my part! Sorry to have bothered you with it and wasting your time.