I have inserted an aggregation node below the final aggregation node in a graphical CV (see picture below). Both aggregation nodes are identical and both contain an integer field 'FLAG' which has been propagated from node 'Union_1' below and defined as a 'measure' in the semantic node..
For some unexplicable reason the records and thereby the measure FLAG is not aggregated in the first aggregation node ('Aggregation_1). Aggregation only takes place in the final aggregation node ('Aggregation'). Well darn me if I am stupid to assume that an aggregation node is supposed to ... yes exactly: to aggregate 
I would be most grateful if somebody could explain this most awkward behaviour to me.
I assume I am doing something wrong so I would indeed like to know what it is.
