stock_locations_II/stock_view.xml

<?xml version="1.0"?>
<openerp>
    <data>

        <record id="stock_picking_location_stock_picking_form" model="ir.ui.view">
            <field name="name">stock_picking_location.stock.picking.form</field>
            <field name="model">stock.picking</field>
            <field name="inherit_id" ref="stock.view_picking_form"/>
            <field name="arch" type="xml">
                <field name="move_lines" position="before">
                    <group colspan="4" col="6">
                        <field name="new_location_id"/>
                        <field name="new_location_dest_id"/>
                        <button name="update_locations" string="Actualizar Origen/Destino" type="object"/>
                    </group>
                </field>
            </field>
        </record>

    </data>
</openerp>