Hi Przemas, so yes currently MoI's "curve from 2 views" only works with 2 planar curves, which does not include lines since a line can be on many different planes instead of just one plane. I've updated this function for the next v4 beta so it will work with lines too. However your particular line curve there is made up of 5 points that squiggle around only very slightly but enough so that MoI doesn't recognize it as a line. But if you make a simple 2 point line there that will then work in the next v4 beta.

Thanks, - Michael