What is the condition for UpdatedNodes to add new node or Update existing Node when used with OrderD

If you want to UPDATE values for the existing nodes, you can specify only those nodes. But if you want to ADD new nodes, then you should specify existing nodes with the same values or changed values and also specify new nodes. Consider following scenarios for better understanding

Scenario 1: You have a field named "color" and is assigned with value "blue". Now you want to UPDATE this value to "green" using "UpdatedNodes". Then you can use following format

<ord:UpdatedNodes>
<_root>    
<color>green</color>
</_root>
</ord:UpdatedNodes>

Scenario 2: You have a field named "color" and is assigned with value "blue". Now you want to ADD another instance of "color" and assign the value "green" to it using "UpdatedNodes". Then you can use following format