"Inserting" a sibling node into XML chunk returns an unexpected number of nodes: 4 instead of 2.

I've attached a kludgy attempt I made in emml to 'force' Presto to create a JSON array, not a JSON object, of savedQueries by 'adding' a sibling savedQuery node to the original single one, when only one exists:

    <constructor outputvariable="result">
      <SavedQueriesResponse>
        <SavedQueries>
          <SavedQuery>
            <queryid>435</queryid>
            <title>Query # 1 </title>
            <creationdate>1254027600000</creationdate>
            <modificationdate>1254027600000</modificationdate>
            <shared>1</shared>
          </SavedQuery>
        </SavedQueries>
      </SavedQueriesResponse>
    </constructor>

Running the standalone emml attachment does almost what I want.

The problem is that the assignment operation (below) doesn't replace the existing SavedQueries parent node's content with the 2 savedQuery nodes from result2. 

Somehow, 4 savedquery children are placed under the parent instead of 2.

<assign fromexpr="$result2//result/*" toexpr="$result//SavedQueriesResponse/SavedQueries" />

I'm hoping that there's something obvious that I've overlooked.

Thanks,

-John