[6.0] The getItem function returns a stdClass

migrations/54-60/removed-backward-incompatibility.md

@@ -15,3 +15,19 @@ There should be an explanation of how to mitigate the removals / changes.
 
 - PR: https://github.com/joomla/joomla-cms/pull/42805
 - Description: The CMS Input object `\Joomla\CMS\Input` has been deprecated since Joomla 4.3. The CMS core code has switched the code to the Framework Input object `\Joomla\Input`, which is very much a drop-in replacement. This is especially of relevance if you are using the MVC classes, which now use the framework class. Make sure that your code imports the correct class.
+
+### getItem returns a stdClass instead of CMSObject
+
+- PR: https://github.com/joomla/joomla-cms/pull/42961
+- File: libraries/src/MVC/Model/AdminModel.php
+- Description: The `AdminModel` class does return a `stdClass` object in the `getItem` function instead of a `CMSObject`. This means that all the deprecated functions of `CMSObject` are not available anymore. Mainly the set and get function should be replaced accordingly as documented in the `CMSObject` class or the respective traits. For example you can use 
+```php
+// Old:
+$article = $app->bootComponent('content')->getMVCFactory()->createModel('Article', 'Administrator')->getItem(1);
+echo $article->get('title');
+
+// New:
+$article = $app->bootComponent('content')->getMVCFactory()->createModel('Article', 'Administrator')->getItem(1);
+echo $article->title;
+```
+