The internal stuff has definitely changed since the article was written in 2006. But I suspect the exact functionality you are describing may not have existed in any mx version. A key difference between your code and the linked examples is the usage of cfoutput query=".." (not just a plain cfoutput ).
The query attribute obviously provides some extra context when evaluating the variables. Remove it (like in your example) and the results are "the value from the first row, not currentRow.". Even under MX6, which does not bode well for subsequent versions.
That exact functionality probably was not removed. It just never worked to begin with.
Classic example of the inner platform effect.
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