Index: branches/5.2.x/core/units/helpers/cat_dbitem_export_helper.php
===================================================================
diff -u -N -r16692 -r16779
--- branches/5.2.x/core/units/helpers/cat_dbitem_export_helper.php	(.../cat_dbitem_export_helper.php)	(revision 16692)
+++ branches/5.2.x/core/units/helpers/cat_dbitem_export_helper.php	(.../cat_dbitem_export_helper.php)	(revision 16779)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: cat_dbitem_export_helper.php 16692 2021-08-31 09:24:09Z alex $
+* @version	$Id: cat_dbitem_export_helper.php 16779 2023-11-22 09:14:46Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -1350,22 +1350,24 @@
 			$object = $event->getObject(Array ('skip_autoload' => true));
 
 			$options = $object->GetFieldOptions('ExportPresets');
-			$export_settings = $this->Application->RecallPersistentVar('export_settings');
+			$where_clause = array(
+				'ItemPrefix = ' . $this->Conn->qstr($event->Prefix),
+				'PortalUserId = ' . $this->Application->RecallVar('user_id'),
+			);
+			$sql = 'SELECT PresetData, PresetName
+					FROM ' . TABLE_PREFIX . 'ExportUserPresets
+					WHERE (' . implode(') AND (', $where_clause) . ')';
+			$export_settings = $this->Conn->GetCol($sql, 'PresetName');
 
 			if ( !$export_settings ) {
 				return;
 			}
 
-			$export_settings = unserialize($export_settings);
-
-			if ( !isset($export_settings[$event->Prefix]) ) {
-				return;
-			}
-
 			$export_presets = array ('' => '');
 
-			foreach ($export_settings[$event->Prefix] as $key => $val) {
-				$export_presets[implode('|', $val['ExportColumns'])] = $key;
+			foreach ( $export_settings as $name => $data ) {
+				$data = json_decode($data, true);
+				$export_presets[implode('|', $data['ExportColumns'])] = $name;
 			}
 
 			$options['options'] = $export_presets;
@@ -1488,12 +1490,13 @@
 
 			if ( $this->verifyOptions($event) ) {
 				if ( $this->_getExportSavePreset($object) ) {
-					$name = $object->GetDBField('ExportPresetName');
-
-					$export_settings = $this->Application->RecallPersistentVar('export_settings');
-					$export_settings = $export_settings ? unserialize($export_settings) : array ();
-					$export_settings[$event->Prefix][$name] = $field_values;
-					$this->Application->StorePersistentVar('export_settings', serialize($export_settings));
+					$fields_hash = array(
+						'PortalUserId' => $this->Application->RecallVar('user_id'),
+						'ItemPrefix' => $event->Prefix,
+						'PresetName' => $object->GetDBField('ExportPresetName'),
+						'PresetData' => json_encode($field_values),
+					);
+					$this->Conn->doInsert($fields_hash, TABLE_PREFIX . 'ExportUserPresets', 'REPLACE');
 				}
 
 				$progress_t = $this->Application->RecallVar('export_progress_t');