How to Remove Group Header / Footer
<p>I created a Group with a Header and a Footer. Then i tried to delete just the header, but it looks like there is no way to do so.</p>

<h2>Here are a Sample:</h2>

<p><strong>First :</strong> Creating my group header and footer
<a href="https://i.stack.imgur.com/oQOCg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oQOCg.png" alt="Creating my group header and footer"></a></p>

<p><strong>Secound :</strong> trying to delete my header
<a href="https://i.stack.imgur.com/9cg5v.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9cg5v.png" alt="enter image description here"></a></p>

<p><strong>Result :</strong> it removed all rows in this group
<a href="https://i.stack.imgur.com/uYLD1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uYLD1.png" alt="enter image description here"></a></p>

<hr>

<h2>Question</h2>

<blockquote>
  <p>Is there a way to delete only the header row without creating a new Tablix ?</p>
</blockquote>