Index: branches/unlabeled/unlabeled-1.14.2/kernel/units/general/cat_dbitem_export.php
===================================================================
diff -u -r4066 -r4152
--- branches/unlabeled/unlabeled-1.14.2/kernel/units/general/cat_dbitem_export.php	(.../cat_dbitem_export.php)	(revision 4066)
+++ branches/unlabeled/unlabeled-1.14.2/kernel/units/general/cat_dbitem_export.php	(.../cat_dbitem_export.php)	(revision 4152)
@@ -1,7 +1,7 @@
 <?php
 
 	define('EXPORT_STEP', 200); // export by 200 items (e.g. links)
-	define('IMPORT_CHUNK', 2048); // 10240); //30720); //50120); // 5 KB
+	define('IMPORT_CHUNK', 30720); // 10240); //30720); //50120); // 5 KB
 
 	define('IMPORT_TEMP', 1);
 	define('IMPORT_LIVE', 2);
@@ -18,9 +18,9 @@
 		 * @var Array
 		 */
 		var $cacheStatus = Array();
-		
+
 		var $cacheTable = '';
-		
+
 		var $exportFields = Array();
 
 		/**
@@ -65,13 +65,13 @@
 		 */
 		var $filePointer = null;
 
-		
+
 		function kCatDBItemExportHelper()
 		{
 			parent::kHelper();
 			$this->cacheTable = TABLE_PREFIX.'ImportCache';
 		}
-		
+
 		/**
 		 * Returns value from cache if found or false otherwise
 		 *
@@ -103,7 +103,7 @@
 		function storeCache($cache_types)
 		{
 			$cache_types = explode(',', $cache_types);
-			
+
 			$values_sql = '';
 			foreach ($cache_types as $cache_type) {
 				$sql_mask = '('.$this->Conn->qstr($cache_type).',%s,%s),';
@@ -119,20 +119,20 @@
 				$sql = 'INSERT INTO '.$this->cacheTable.'(`CacheName`,`VarName`,`VarValue`) VALUES '.$values_sql;
 				$this->Conn->Query($sql);
 			}
-			
+
 		}
-		
+
 		function loadCache()
 		{
 			$sql = 'SELECT * FROM '.$this->cacheTable;
 			$records = $this->Conn->Query($sql);
-			
+
 			$this->cache = Array();
 			foreach ($records as $record) {
 				$this->addToCache($record['CacheName'], $record['VarName'], $record['VarValue'], false);
 			}
 		}
-		
+
 		/**
 		 * Fill required fields with dummy values
 		 *
@@ -546,7 +546,7 @@
 			else {
 				$this->loadCache();
 			}
-			
+
 			$this->exportFields = $this->exportOptions['ExportColumns'];
 			$this->addToCache('category_parent_path', $this->Application->GetVar('m_cat_id'), $this->exportOptions['ImportCategoryPath']);
 
@@ -573,13 +573,13 @@
 
 			$this->exportOptions['start_from'] += $bytes_imported;
 			$this->storeCache('new_ids');
-			
+
 			$this->saveOptions($event);
-			
+
 			if ($this->exportOptions['start_from'] == $this->exportOptions['total_records']) {
 				$this->Conn->Query('TRUNCATE TABLE '.$this->cacheTable);
 			}
-			
+
 			return $this->exportOptions;
 		}
 
@@ -653,14 +653,14 @@
 			$this->setCurrentID();
 		}
 
-		
+
 		function getItemCategory()
 		{
 			$backup_category_id = $this->Application->GetVar('m_cat_id');
 			foreach ($this->curItem->CategoryPath as $category_index => $category_name) {
 				if (!$category_name) continue;
 				$category_key = crc32( implode(':', array_slice($this->curItem->CategoryPath, 0, $category_index + 1) ) );
-				
+
 				$category_id = $this->getFromCache('category_names', $category_key);
 				if ($category_id === false) {
 					// get parent category path to search only in it
@@ -697,10 +697,10 @@
 			if (!$this->curItem->CategoryPath) {
 				$category_id = $backup_category_id;
 			}
-			
+
 			return $category_id;
 		}
-		
+
 		/**
 		 * Enter description here...
 		 *
@@ -710,10 +710,10 @@
 		{
 			$save_method = 'Create';
 			$load_keys = Array();
-			
+
 			// create/update categories
 			$backup_category_id = $this->Application->GetVar('m_cat_id');
-			
+
 			// perform replace duplicates code
 			if ($this->exportOptions['ReplaceDuplicates']) {
 				// get replace keys first, then reset current item to empty one
@@ -763,7 +763,7 @@
 				$this->resetImportObject($event, IMPORT_LIVE, $record_data);
 				$category_id = $this->getItemCategory();
 			}
-			
+
 			// create main record
 			if ($save_method == 'Create') {
 				$this->fillRequiredFields($this->false, $this->curItem, true);
@@ -775,7 +775,7 @@
 			}
 //			$sql_end = getmicrotime();
 //			$this->saveLog('SQL ['.$save_method.'] Time: '.($sql_end - $sql_start).'s');
-			
+
 			if ($load_keys && ($save_method == 'Create') && $this->exportOptions['ReplaceDuplicates']) {
 				// map new id to old id
 				$this->addToCache('new_ids', crc32($where_clause), $this->curItem->GetID() );
@@ -793,14 +793,14 @@
 			$this->Application->SetVar('m_cat_id', $backup_category_id);
 			return true;
 		}
-		
+
 		/*function saveLog($msg)
 		{
 			$fp = fopen(FULL_PATH.'/sqls.log', 'a');
 			fwrite($fp, $msg."\n");
 			fclose($fp);
 		}*/
-		
+
 		/**
 		 * Returns category parent path, if possible, then from cache
 		 *
@@ -1044,15 +1044,15 @@
 		{
 			return fgetcsv($this->filePointer, 10000, $this->exportOptions['FieldsSeparatedBy'], $this->exportOptions['FieldsEnclosedBy']);
 		}
-		
+
 		function saveOptions(&$event, $options = null)
 		{
 			if (!isset($options)) {
 				$options = $this->exportOptions;
 			}
 			$this->Application->StoreVar($event->getPrefixSpecial().'_options', serialize($options) );
 		}
-		
+
 		function loadOptions(&$event)
 		{
 			return unserialize($this->Application->RecallVar($event->getPrefixSpecial().'_options'));