Index: trunk/core/kernel/session/session.php
===================================================================
diff -u -N -r5013 -r5024
--- trunk/core/kernel/session/session.php	(.../session.php)	(revision 5013)
+++ trunk/core/kernel/session/session.php	(.../session.php)	(revision 5024)
@@ -680,18 +680,22 @@
 	function SaveData()
 	{
 		if (!$this->Application->GetVar('skip_last_template') && $this->Application->GetVar('ajax') != 'yes') {
-			$t = $this->Application->GetVar('t');
-			$last_env = $this->Application->BuildEnv($t, Array('m_opener' => 'u', '__URLENCODE__' => 1), 'all');
-			$last_template = basename($_SERVER['PHP_SELF']).'|';
-			$last_template .= substr($last_env, strlen(ENV_VAR_NAME) + 1);
-			$this->StoreVar('last_template',  $last_template);
-			$this->StoreVar('last_env', substr($this->Application->BuildEnv($t, Array('pass'=>'all', '__URLENCODE__' => 1)), strlen(ENV_VAR_NAME)+1));
+			$this->SaveLastTemplate( $this->Application->GetVar('t') );
 		}
 
 		$this->PrintSession('after save');
 		$this->Storage->SaveData($this);
 	}
 
+	function SaveLastTemplate($t)
+	{
+		$last_env = $this->Application->BuildEnv($t, Array('m_opener' => 'u', '__URLENCODE__' => 1), 'all');
+		$last_template = basename($_SERVER['PHP_SELF']).'|'.substr($last_env, strlen(ENV_VAR_NAME) + 1);
+		$this->StoreVar('last_template', $last_template);
+		
+		$this->StoreVar('last_env', substr($this->Application->BuildEnv($t, Array('__URLENCODE__' => 1), 'all'), strlen(ENV_VAR_NAME)+1));
+	}
+	
 	function StoreVar($name, $value)
 	{
 		$this->Data->Set($name, $value);
Index: trunk/core/admin_templates/js/catalog.js
===================================================================
diff -u -N -r5022 -r5024
--- trunk/core/admin_templates/js/catalog.js	(.../catalog.js)	(revision 5022)
+++ trunk/core/admin_templates/js/catalog.js	(.../catalog.js)	(revision 5024)
@@ -69,6 +69,11 @@
 		// sets new category to kernel_form in case if item tab
 		// loads faster and will check if it's category is same
 		// as parent category of categories list
+		
+		if (get_hidden_field('m_cat_id') == $cat_id) {
+			// it's the same category, then don't reload category list
+			return true;
+		}
 		set_hidden_field('m_cat_id', $cat_id);
 	}
 	
Index: trunk/core/kernel/application.php
===================================================================
diff -u -N -r5018 -r5024
--- trunk/core/kernel/application.php	(.../application.php)	(revision 5018)
+++ trunk/core/kernel/application.php	(.../application.php)	(revision 5024)
@@ -125,7 +125,7 @@
 	/**
 	 * Holds a reference to Session
 	 *
-	 * @var kSession
+	 * @var Session
 	 */
 	var $Session = null;
 
Index: trunk/kernel/admin_templates/incs/catalog.js
===================================================================
diff -u -N -r5022 -r5024
--- trunk/kernel/admin_templates/incs/catalog.js	(.../catalog.js)	(revision 5022)
+++ trunk/kernel/admin_templates/incs/catalog.js	(.../catalog.js)	(revision 5024)
@@ -69,6 +69,11 @@
 		// sets new category to kernel_form in case if item tab
 		// loads faster and will check if it's category is same
 		// as parent category of categories list
+		
+		if (get_hidden_field('m_cat_id') == $cat_id) {
+			// it's the same category, then don't reload category list
+			return true;
+		}
 		set_hidden_field('m_cat_id', $cat_id);
 	}
 	
Index: trunk/kernel/admin_templates/xml/categories_list.tpl
===================================================================
diff -u -N -r5022 -r5024
--- trunk/kernel/admin_templates/xml/categories_list.tpl	(.../categories_list.tpl)	(revision 5022)
+++ trunk/kernel/admin_templates/xml/categories_list.tpl	(.../categories_list.tpl)	(revision 5024)
@@ -36,6 +36,7 @@
 	a_toolbar.EnableButton('homecat');
 </inp2:m_if>
 #separator#
+<inp2:c_UpdateLastTemplate template="catalog"/>
 <inp2:m_RenderElement name="kernel_form" form_name="categories_form"/>
 <table border="0" width="100%">
 	<inp2:m_DefineElement name="category_td">
Index: trunk/core/admin_templates/categories/xml/categories_list.tpl
===================================================================
diff -u -N -r5022 -r5024
--- trunk/core/admin_templates/categories/xml/categories_list.tpl	(.../categories_list.tpl)	(revision 5022)
+++ trunk/core/admin_templates/categories/xml/categories_list.tpl	(.../categories_list.tpl)	(revision 5024)
@@ -36,6 +36,7 @@
 	a_toolbar.EnableButton('homecat');
 </inp2:m_if>
 #separator#
+<inp2:c_UpdateLastTemplate template="catalog"/>
 <inp2:m_RenderElement name="kernel_form" form_name="categories_form"/>
 <table border="0" width="100%">
 	<inp2:m_DefineElement name="category_td">
Index: trunk/kernel/units/categories/categories_tag_processor.php
===================================================================
diff -u -N -r4997 -r5024
--- trunk/kernel/units/categories/categories_tag_processor.php	(.../categories_tag_processor.php)	(revision 4997)
+++ trunk/kernel/units/categories/categories_tag_processor.php	(.../categories_tag_processor.php)	(revision 5024)
@@ -288,6 +288,24 @@
 	{
 		return false;
 	}
+	
+	/**
+	 * Substitutes category in last template base on current category
+	 *
+	 * @param Array $params
+	 */
+	function UpdateLastTemplate($params)
+	{
+		$category_id = $this->Application->GetVar('m_cat_id');
+		
+		list($index_file, $env) = explode('|', $this->Application->RecallVar('last_template'), 2);
+		$this->Application->SetVar(ENV_VAR_NAME, $env);
+		$this->Application->HttpQuery->processQueryString();
+		
+		// update required fields
+		$this->Application->SetVar('m_cat_id', $category_id);
+		$this->Application->Session->SaveLastTemplate($params['template']);
+	}
 }
 
 
Index: trunk/core/units/categories/categories_tag_processor.php
===================================================================
diff -u -N -r4997 -r5024
--- trunk/core/units/categories/categories_tag_processor.php	(.../categories_tag_processor.php)	(revision 4997)
+++ trunk/core/units/categories/categories_tag_processor.php	(.../categories_tag_processor.php)	(revision 5024)
@@ -288,6 +288,24 @@
 	{
 		return false;
 	}
+	
+	/**
+	 * Substitutes category in last template base on current category
+	 *
+	 * @param Array $params
+	 */
+	function UpdateLastTemplate($params)
+	{
+		$category_id = $this->Application->GetVar('m_cat_id');
+		
+		list($index_file, $env) = explode('|', $this->Application->RecallVar('last_template'), 2);
+		$this->Application->SetVar(ENV_VAR_NAME, $env);
+		$this->Application->HttpQuery->processQueryString();
+		
+		// update required fields
+		$this->Application->SetVar('m_cat_id', $category_id);
+		$this->Application->Session->SaveLastTemplate($params['template']);
+	}
 }