Index: branches/unlabeled/unlabeled-1.12.10/kernel/units/general/cat_dbitem_export.php
===================================================================
diff -u -N -r4105 -r4113
--- branches/unlabeled/unlabeled-1.12.10/kernel/units/general/cat_dbitem_export.php	(.../cat_dbitem_export.php)	(revision 4105)
+++ branches/unlabeled/unlabeled-1.12.10/kernel/units/general/cat_dbitem_export.php	(.../cat_dbitem_export.php)	(revision 4113)
@@ -545,7 +545,7 @@
 				$value = null;
 			}
 
-			$field_name = $this->exportFields[$field_index];
+			$field_name = getArrayValue($this->exportFields, $field_index);
 			if ($field_name == 'ResourceId') {
 				return false;
 			}
@@ -565,7 +565,7 @@
 				$this->curItem->CategoryPath = $value ? explode($this->exportOptions['CategorySeparator'], $value) : Array();
 			}
 			elseif (substr($field_name, 0, 8) == 'Category') {
-				$this->curItem->CategoryPath[ (int)substr($field_name, 8) ] = $value;
+				$this->curItem->CategoryPath[ (int)substr($field_name, 8) - 1 ] = $value;
 			}
 			elseif (substr($field_name, 0, 11) == '__VIRTUAL__') {
 				$field_name = substr($field_name, 11);
@@ -639,7 +639,9 @@
 			
 			foreach ($this->curItem->CategoryPath as $category_index => $category_name) {
 				if (!$category_name) continue;
-				$category_id = $this->getFromCache('category_names', $category_name);
+				$category_key = crc32( implode(':', array_slice($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
 					$current_category_id = $this->Application->GetVar('m_cat_id');
@@ -648,7 +650,7 @@
 					// get category id from database by name
 					$sql = 'SELECT CategoryId
 							FROM '.TABLE_PREFIX.'Category
-							WHERE ('.$title_field.' = '.$this->Conn->qstr($category_name).') AND (ParentPath LIKE "'.$parent_path.'%")';
+							WHERE ('.$title_field.' = '.$this->Conn->qstr($category_name).') AND (ParentPath LIKE "'.$parent_path.'%") AND (ParentPath <> "'.$parent_path.'")';
 					$category_id = $this->Conn->GetOne($sql);
 
 					if ($category_id === false) {
@@ -663,11 +665,11 @@
 						if ($this->dummyCategory->Create($force_id)) {
 							$category_id = $this->dummyCategory->GetID();
 							$this->addToCache('category_parent_path', $category_id, $this->dummyCategory->GetDBField('ParentPath'));
-							$this->addToCache('category_names', $category_name, $category_id);
+							$this->addToCache('category_names', $category_key, $category_id);
 						}
 					}
 					else {
-						$this->addToCache('category_names', $category_name, $category_id);
+						$this->addToCache('category_names', $category_key, $category_id);
 					}
 				}