Index: branches/5.2.x/core/units/helpers/cat_dbitem_export_helper.php
===================================================================
diff -u -N -r15246 -r16000
--- branches/5.2.x/core/units/helpers/cat_dbitem_export_helper.php	(.../cat_dbitem_export_helper.php)	(revision 15246)
+++ branches/5.2.x/core/units/helpers/cat_dbitem_export_helper.php	(.../cat_dbitem_export_helper.php)	(revision 16000)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: cat_dbitem_export_helper.php 15246 2012-03-27 11:51:06Z alex $
+* @version	$Id: cat_dbitem_export_helper.php 16000 2013-11-05 08:58:29Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -409,18 +409,22 @@
 
 			$file_helper->CheckFolder(EXPORT_PATH);
 
-			if ($event->Special == 'export') {
-				$write_mode = ($this->exportOptions['start_from'] == 0) ? 'w' : 'a';
-				$this->filePointer = fopen($this->getExportFilename(), $write_mode);
+			if ( $event->Special == 'export' ) {
+				$first_step = $this->exportOptions['start_from'] == 0;
+				$this->filePointer = fopen($this->getExportFilename(), $first_step ? 'w' : 'r+');
+
+				if ( !$first_step ) {
+					fseek($this->filePointer, 0, SEEK_END);
+				}
 			}
 			else {
 				$this->filePointer = fopen($this->getImportFilename(), 'r');
-			}
 
-			// skip UTF-8 BOM Modifier
-			$first_chars = fread($this->filePointer, 3);
-			if (bin2hex($first_chars) != 'efbbbf') {
-				fseek($this->filePointer, 0);
+				// skip UTF-8 BOM Modifier
+				$first_chars = fread($this->filePointer, 3);
+				if ( bin2hex($first_chars) != 'efbbbf' ) {
+					fseek($this->filePointer, 0);
+				}
 			}
 		}
 
Index: branches/5.2.x/core/kernel/globals.php
===================================================================
diff -u -N -r15856 -r16000
--- branches/5.2.x/core/kernel/globals.php	(.../globals.php)	(revision 15856)
+++ branches/5.2.x/core/kernel/globals.php	(.../globals.php)	(revision 16000)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: globals.php 15856 2013-07-02 14:56:00Z alex $
+* @version	$Id: globals.php 16000 2013-11-05 08:58:29Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -479,15 +479,17 @@
 	 */
 	public static function getcsvline($data, $delimiter = ',', $enclosure = '"', $recordSeparator = "\r\n")
 	{
-		foreach($data as $field_index => $field_value) {
-			// replaces an enclosure with two enclosures
-			$data[$field_index] = str_replace($enclosure, $enclosure.$enclosure, $field_value);
-		}
+		$file = new SplFileObject('php://output', 'w');
 
-		$line = $enclosure.implode($enclosure.$delimiter.$enclosure, $data).$enclosure.$recordSeparator;
-		$line = preg_replace('/'.preg_quote($enclosure, '/').'([0-9\.]+)'.preg_quote($enclosure, '/').'/', '$1', $line);
+		ob_start();
+		$file->fputcsv($data, $delimiter, $enclosure);
+		$ret = ob_get_clean();
 
-		return $line;
+		if ( $recordSeparator != "\n" ) {
+			return substr($ret, 0, -1) . $recordSeparator;
+		}
+
+		return $ret;
 	}
 
 	/**