Hi,

due to the code in web client (create a virtual id for the line which is changed to real id only when form is saved) and onchange method return (can't return a view or action), it is not possible, this is logical, lines are saved only when form is saved. The best way I find for 6.1 is to add a button update which return an action ir.actions.act_window, just on click to do (not two for save the form and edit in case where you want to save multi lines).

Bye.