I have successfully used the code below to hide the internal reference on a printed sales quote/order, but it does not work on a printed invoice, even though the xml structure of both views is essentially the same (unless I'm missing something). Thoughts? Odoo v11 CE

Note: if I change the "l.name" code to "l.product_id.name" directly in the report_invoice_layouted QWeb view in the Settings interface, I get the desired response (i.e. product name without the int reference).

<odoo>
    <data>
        <template id="report_invoice_product_code" inherit_id="sale.report_invoice_layouted">
            <xpath expr="//span[@t-field='l.name']" position="replace">
                <span t-field="l.product_id.name"/>
            </xpath>
        </template>
    </data>
</odoo>