Index: branches/5.2.x/core/units/categories/categories_event_handler.php
===================================================================
diff -u -N -r16692 -r16713
--- branches/5.2.x/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 16692)
+++ branches/5.2.x/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 16713)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: categories_event_handler.php 16692 2021-08-31 09:24:09Z alex $
+* @version	$Id: categories_event_handler.php 16713 2022-07-19 11:00:49Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -2443,6 +2443,7 @@
 				return;
 			}
 
+			$files = $this->sortByDependencies($files);
 			kUtil::setResourceLimit();
 
 			/** @var CategoriesItem $dummy */
@@ -2472,6 +2473,44 @@
 		}
 
 		/**
+		 * Sort structure files array by dependencies.
+		 *
+		 * @param array $files Files.
+		 *
+		 * @return array
+		 */
+		protected function sortByDependencies(array $files)
+		{
+			foreach ( $files as $template => $data ) {
+				$meta = unserialize($data['FileMetaInfo']);
+				$section = isset($meta['section']) ? $meta['section'] : '';
+				$page_name = isset($meta['name']) ? $meta['name'] : '_Auto: ' . $template;
+				$files[$template]['sort_key'] = substr_count(($section ? $section . '||' : '') . $page_name, '||');
+			}
+
+			uasort($files, array($this, 'compareSMSTemplates'));
+
+			return $files;
+		}
+
+		/**
+		 * Files array comparing.
+		 *
+		 * @param array $sms_template_a First item.
+		 * @param array $sms_template_b Second item.
+		 *
+		 * @return integer
+		 */
+		public function compareSMSTemplates(array $sms_template_a, array $sms_template_b)
+		{
+			if ( $sms_template_a['sort_key'] == $sms_template_b['sort_key'] ) {
+				return 0;
+			}
+
+			return $sms_template_a['sort_key'] < $sms_template_b['sort_key'] ? -1 : 1;
+		}
+
+		/**
 		 * Processes OnMassMoveUp, OnMassMoveDown events
 		 *
 		 * @param kEvent $event