Hello,

I am trying to inherit a view to change the attributes of a button on that view, and it works exactly how I would like it to.

However, when I restart the server, update the apps list and upgrade the module an error is raised. I can reinstall the app just fine without issue and works as expected. But isn't a suitable way to upgrade the app. 

Here is the error raised:

odoo.tools.convert.ParseError: "Error while validating view

Field `quotation_count` does not exist

Here is the new view I have created:

    <record model="ir.ui.view" id="crm_create_proposal_button">

      <field name="name">crm_create_proposal_button</field>

      <field name="model">crm.lead</field>

      <field name="inherit_id" ref="sale_crm.crm_case_form_view_oppor"/>

      <field name="arch" type="xml">

        <data>

          <xpath expr="//button[@name='action_sale_quotations_new']" position="attributes">

            <attribute name="attrs">

              {'invisible': ['|', ('correct_programme_checkbox', '=', False), '|', ('correct_seller_checkbox', '=', False), '|', ('correct_introducer_checkbox', '=', False), '|', ('correct_introducer_checkbox', '=', False), '|', ('correct_customer_company_checkbox', '=', False), '|', ('correct_trustee_checkbox', '=', False), ('correct_final_salary_checkbox', '=', False)]}

            </attribute>

          </xpath>

        </data>

      </field>

    </record>

There is no field `quotation_count` on the new view but there is on the view which I am inheriting from. 

Here are my dependencies for the module: 

'depends': ['base', 'crm', 'sale_management', 'sale']

Any help would be greatly appreciated, I am probably overlooking something simple. 

Thanks,