Index: trunk/core/units/general/helpers/image_helper.php
===================================================================
diff -u -N -r8705 -r8719
--- trunk/core/units/general/helpers/image_helper.php	(.../image_helper.php)	(revision 8705)
+++ trunk/core/units/general/helpers/image_helper.php	(.../image_helper.php)	(revision 8719)
@@ -208,11 +208,13 @@
 				if ($item_image['DefaultImg'] == 1 || $item_image['Name'] == 'main') {
 					// process primary image separately
 					$object->SetDBField('PrimaryImage', $image_path);
+					$object->SetOriginalField('PrimaryImage', $image_path);
 					$object->Fields['PrimaryImage']['original_field'] = $item_image['Name'];
 					continue;
 				}
 
 				$object->SetDBField('Image'.$image_counter, $image_path);
+				$object->SetOriginalField('Image'.$image_counter, $image_path);
 				$object->Fields['Image'.$image_counter]['original_field'] = $item_image['Name'];
 				$image_counter++;
 			}
@@ -276,6 +278,23 @@
 				$i++;
 			}
 		}
+
+		/**
+		 * Preserves cloned item images to be rewrited with original item images
+		 *
+		 * @param Array $field_values
+		 */
+		function PreserveItemImages(&$field_values)
+		{
+			foreach ($field_values as $field_name => $field_value) {
+				if (!is_array($field_value)) continue;
+
+				if (isset($field_value['upload']) && ($field_value['error'] == UPLOAD_ERR_NO_FILE)) {
+					// this is upload field, but nothing was uploaded this time
+					unset($field_values[$field_name]);
+				}
+			}
+		}
 	}
 
 ?>
\ No newline at end of file