title: wp_update_post make custom field values disappear (Wordpress)
body: <p>I'm trying to update the post content in one of my post through the wp_update_post function. I have read the documentation here: <a href="http://codex.wordpress.org/Function_Reference/wp_update_post" rel="nofollow">http://codex.wordpress.org/Function_Reference/wp_update_post</a></p>
  
  <p>And if I get it right I just need to send the post ID and the post content I want to update with - just like in the example - and this should be the only thing that will change. Although my custom fields that I have attached to this post disappears, strange enough. </p>
  
  <p>I have the following code that I pass on:</p>
  
  <pre><code>if(isset($_POST['submit'])){
      $the_post = array();
      $the_post['ID'] = $_POST['id'];
      $the_post['post_content'] = $_POST['recension'];
  
      // Update the post into the database
      wp_update_post( $the_post );
  }
  </code></pre>
  
  <p>How come this happen and how do I solve it?</p>