Motion OSC semi working - help

Hi all, Have created a two line/three point 'line' with OSC and am now trying to do a one line/two point version. Control point 1 works fine and pivots around CP2 when moved but CP 2 only moves the other end of the line and detaches from CP1 - have remade the track point etc of the second point. Also when I analyse the TP's I don't get the progress bar! - help welcome