Index: branches/5.2.x/core/install/upgrades.php
===================================================================
diff -u -N -r16634 -r16779
--- branches/5.2.x/core/install/upgrades.php	(.../upgrades.php)	(revision 16634)
+++ branches/5.2.x/core/install/upgrades.php	(.../upgrades.php)	(revision 16779)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: upgrades.php 16634 2018-11-13 09:38:24Z alex $
+* @version	$Id: upgrades.php 16779 2023-11-22 09:14:46Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -2367,6 +2367,10 @@
 		 */
 		public function Upgrade_5_2_2_B3($mode)
 		{
+			if ( $mode === 'after' ) {
+				$this->migrateExportUserPresets();
+			}
+
 			if ( $mode != 'before' ) {
 				return;
 			}
@@ -2411,4 +2415,43 @@
 				}
 			}
 		}
+
+		/**
+		 * Transforms "export_settings" persistent session variable into "ExportUserPresets" database table.
+		 *
+		 * @return void
+		 */
+		protected function migrateExportUserPresets()
+		{
+			$sql = 'SELECT VariableValue, PortalUserId
+			 			FROM ' . TABLE_PREFIX . 'UserPersistentSessionData
+			 			WHERE VariableName = "export_settings"';
+			$variable_values = $this->Conn->GetColIterator($sql, 'PortalUserId');
+
+			foreach ( $variable_values as $user_id => $variable_value ) {
+				if ( !kUtil::IsSerialized($variable_value) ) {
+					continue;
+				}
+
+				$variable_value = unserialize($variable_value);
+
+				foreach ( $variable_value as $prefix => $prefix_export_settings ) {
+					foreach ( $prefix_export_settings as $name => $export_settings ) {
+						$fields_hash = array(
+							'PortalUserId' => $user_id,
+							'ItemPrefix' => $prefix,
+							'PresetName' => $name,
+							'PresetData' => json_encode($export_settings),
+						);
+						$this->Conn->doInsert($fields_hash, TABLE_PREFIX . 'ExportUserPresets', 'REPLACE');
+					}
+				}
+			}
+
+			$sql = 'DELETE
+					FROM ' . TABLE_PREFIX . 'UserPersistentSessionData
+					WHERE VariableName = "export_settings"';
+			$this->Conn->Query($sql);
+		}
+
 	}