For Odoo 9 I try to create multiple invoice types that only differ in the title of the created pdf. Im my case 3 types of titles should be present from the dropdown menu, ideally also when sending the invoice directly from odoo:

• Invoice

• Commercial Invoice

• Advance Payment Invoice

Currently there is only one invoice report. That has 4 views that inherit each other. I manually tried what I need to do: use an xpath with replace in a new view that modifies the existing views.

I have had a look at https://www.askmpa.com/creating-multiple-invoice-templates-in-odoo-v8/

What I do not want to do is break all the exisiting layouts by duplicating every single view. This would make consistent changes almost impossible. I only what to replace the content of one tag in the report. In my case a single <h2>

Any idea of how to do this? Can I reuse the created views for two types of reports as created in the link above without duplicating them?