title: How can I delete the "sheet" node keeping its content intact?
body: <p>I would like to remove the node <code>&lt;sheet&gt;&lt;/sheet&gt;</code> from a form view. For instance, I have this view:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;record id="view_account_period_form" model="ir.ui.view"&gt;
      &lt;field name="name"&gt;account.period.form&lt;/field&gt;
      &lt;field name="model"&gt;account.period&lt;/field&gt;
      &lt;field name="arch" type="xml"&gt;
          &lt;form string="Account Period"&gt;
              &lt;header&gt;
                  [...]
              &lt;/header&gt;
              &lt;sheet&gt;
                  &lt;group&gt;
                      &lt;group&gt;
                          &lt;field name="name"/&gt;
                          &lt;field name="fiscalyear_id" widget="selection"/&gt;
                          &lt;label for="date_start" string="Duration"/&gt;
                          &lt;div&gt;
                              &lt;field name="date_start" class="oe_inline" nolabel="1"/&gt; -
                              &lt;field name="date_stop" nolabel="1" class="oe_inline"/&gt;
                          &lt;/div&gt;
                      &lt;/group&gt;
                      &lt;group&gt;
                          &lt;field name="code"/&gt;
                          &lt;field name="special"/&gt;
                          &lt;field name="company_id" widget="selection" groups="base.group_multi_company"/&gt;
                      &lt;/group&gt;
                  &lt;/group&gt;
              &lt;/sheet&gt;
          &lt;/form&gt;
      &lt;/field&gt;
  &lt;/record&gt;
  </code></pre>
  
  <p>I would like to convert it in this other view without the node, but keeping all the elements within it:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;record id="view_account_period_form" model="ir.ui.view"&gt;
      &lt;field name="name"&gt;account.period.form&lt;/field&gt;
      &lt;field name="model"&gt;account.period&lt;/field&gt;
      &lt;field name="arch" type="xml"&gt;
          &lt;form string="Account Period"&gt;
              &lt;header&gt;
                  [...]
              &lt;/header&gt;
  
              &lt;group&gt;
                  &lt;group&gt;
                      &lt;field name="name"/&gt;
                      &lt;field name="fiscalyear_id" widget="selection"/&gt;
                      &lt;label for="date_start" string="Duration"/&gt;
                      &lt;div&gt;
                          &lt;field name="date_start" class="oe_inline" nolabel="1"/&gt; -
                          &lt;field name="date_stop" nolabel="1" class="oe_inline"/&gt;
                      &lt;/div&gt;
                  &lt;/group&gt;
                  &lt;group&gt;
                      &lt;field name="code"/&gt;
                      &lt;field name="special"/&gt;
                      &lt;field name="company_id" widget="selection" groups="base.group_multi_company"/&gt;
                  &lt;/group&gt;
              &lt;/group&gt;
  
          &lt;/form&gt;
      &lt;/field&gt;
  &lt;/record&gt;
  </code></pre>
  
  <p>Is that possible or I need to override the complete code again?</p>
  
  <p>Maybe something similar to:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;xpath expr="//form/sheet" position="replace"&gt;
      &lt;!-- [...] --&gt;
  &lt;/xpath&gt;
  </code></pre>
  
  <p>There is an open issue in Git Hub asking for solving this <a href="https://github.com/odoo/odoo/issues/3257" rel="nofollow">here</a>, but I think that maybe anyone knows how to do it without programming a new feature in Odoo.</p>