Sorting a file by derived field - generates data twice

Why is it that when I sort my file by a derived field that it generates my data twice.
I have a sort node then I have a child send node to show the sorted file. Two versions of the sorted file get generated.

THis is a problem. See attached pictorials.

Attached Images

• ScriptLogic.jpg (14.3 KB)
• SortNode.jpg (31.4 KB)
• SendNode.jpg (47.4 KB)
• DefineSet.jpg (26.0 KB)