Hello.I would like to move a field for a page to an other page.So i did a postion='replace' then a position='inside'.The replace works bu not the position inside. I don t understand why .Could you explain to me please?​

The error code i receive is : 

wk_websites_id doesn't exist. But i can do a replace on it so... it exists right?

Here is the xml code i did :

<record model="ir.ui.view" id="product_template_form_view_remove_website">
    <field name="priority">100</field>
    <field name="model">product.template</field>
    <field name="inherit_id" ref="mob_multishop.mob_multishop_template_form_view"/>
    <field name="arch" type="xml">
        <xpath expr="//field[@name='wk_websites_id']" position="replace"/>
        <xpath expr="//page[@name='sales']" position="inside">
            <separator string="Product In Websites"/>
            <group>
                <field name="wk_websites_id" widget="many2many_tags"/>
            </group>
        </xpath>

    </field>
</record>

And here the herited view 

mob_multishop.mob_multishop_template_form_view :
​

<odoo>
   <data>
        <record id="mob_multishop_template_form_view" model="ir.ui.view">
            <field name="name">product.template.form.view.inherit</field>
            <field name="model">product.template</field>
            <field name="inherit_id" ref="product.product_template_form_view"/>
            <field name="arch" type="xml">
                <notebook position="inside">
                    <page string="Websites">
                        <separator string="Product In Websites"/>
                        <group>
                            <field name="wk_websites_id" widget="many2many_tags"/>
                        </group>
                    </page>
                </notebook>
            </field>
        </record>
    </data>
</odoo>

Thanks a lot