title: Odoo do not add new XML file after module update
body: <p>I have a module already installed inside my project with a couple of new tables. Now, I want to add XML associated with these tables to create menu items.</p>
  
  <p>In my <strong>openerp</strong>.py, I had this code:</p>
  
  <pre><code> 'data': ['main.xml', 'security/ir.model.access.csv']
  </code></pre>
  
  <p>Now, I want to add a new file containing my XML:</p>
  
  <pre><code> 'data': ['main.xml', 
            'trips.xml',
            'security/ir.model.access.csv']
  </code></pre>
  
  <p>trips.xml looks like this:</p>
  
  <pre><code>&lt;openerp&gt;
      &lt;data&gt;
  
          &lt;record id="action_partner_trip_form" model="ir.actions.act_window"&gt;
              &lt;field name="name"&gt;Trips&lt;/field&gt;
              &lt;field name="type"&gt;ir.actions.act_window&lt;/field&gt;
              &lt;field name="res_model"&gt;res.partner.trip&lt;/field&gt;
              &lt;field name="view_type"&gt;form&lt;/field&gt;
              &lt;field name="help" type="html"&gt;
                &lt;p class="oe_view_nocontent_create"&gt;
                  Click to create a new trip.
                &lt;/p&gt;
              &lt;/field&gt;
          &lt;/record&gt;
  
          &lt;menuitem action="action_partner_trip_form" name="Trips" sequence="4" parent="base.menu_sales" groups="base.group_no_one"/&gt;
      &lt;/data&gt;
  &lt;/openerp&gt;
  </code></pre>
  
  <p>I restarted the server and also updated my main package, but the new XML is not loaded into the application. Also, there are no errors inside my logs.</p>
  
  <p>Of course, if I uninstall -> reinstall it, my XML is loaded and my menu items are added, but I lose precious data.</p>