Ok, on the Smart Flow Line, the Select tool brings up the normal control handles (black squares) as expected then when i switch back to the QuickShape tool handles disappear, no other handles appear. If i do the same thing with the arrow line, when I click the select tool the black handles appear then when I switch back to the QuickShape Tool the smart handles appear. This is the behavior I would expect from the Smart Flow line as well. Does it work on your version of XDP?