Unrolling Pipes

Hello there I am hoping someone can help solve the following.

I have a bunch of rolled pipes (planar, single radius) which are arranged to create a double curvature surface. All center lines meet and intersections between members have been resolved and modeled.

From a fabrication standpoint, the process we would like to follow is to laser cut/mark the scallops at the ends of straight CHS before feeding them to the rolling machine. In essence the fabrication process is the reverse of the modeling process.

I am trying to translate these single radius planar pipes with scalloped ends into straight pipes whose center line is the same length and where the scallops maintain the correct position. I have tried using bend but I am not sure how to achieve acceptable accuracy. I have found a way of doing it "manually" by extracting the trimmed ends and orienting them to a straight segment of the same length as the rolled pipe's CL but its tedious and time consuming.

Any suggestions would be most welcome, also rhino commands not just grasshopper.

Best

Gio