That specific point cloud was generated either through interpolation of generatrix curve and then polar arrayed instead of making surface by revolving... So basically you are asking to recreate erased shape of only left guide points... Isn't that joking with peoples? I haven't worked much with point clouds, but if you can convert point group to cloud, I believe that CAD has implemented capability of generating polyface surface... When you get it (somehow), you could just explode it into lines you are searching for... Another option is to group generatrix segment - then automatically connect segments points with 3d lines (somehow - in correct manner) and finally do polar array of segment 3d lines... But all in all this is some sort of asking for help where help was deliberately neglected...