Changing the quality classificaion tree using XML importer

Version: Windchill 13.0

Use Case: Say, we have a large classification tree that has some nodes that need to be moved, others need to be added or deleted automatically.

Description:

We do not want to do this task with hand (as it will take a lot of time and need to be done on our QA environments first). We also want a script to do this so that in the future, when the tree changes according to our business needs it can be easily done. Though when I was looking for any documentation on how to do this I could not find anything to help me. Currently i am trying to insert a new child node of a child node: root > classification > new node trying to import the following file: 

<?xml version="1.0"?>

<!DOCTYPE NmLoader SYSTEM "standardX26.dtd">

<NmLoader>

    <csvLoader>

        <objectType>com.ptc.windchill.enterprise.iba.classification.ClassificationNode</objectType>

        <csvFile csvSeparator="," isLoadFile="false">

                        Name,DisplayName,ParentNodeInternalName,Description

                        NEW_TEST_NODE,New test node,NonconformanceCategoryTree,This node is used completely and only for testing.

            </csvFile>

    </csvLoader>

</NmLoader>

Trying to import this only gives error that it can not read the file.