If I have a report with 3 groups. For the second group i applicate "removeDuplicate". If the last Value of group 2 is the same as the first value of group 2 of next parent group, rowspan-calculation will be wrong, by calculating rows of both subgoups.
This is ok, without removeDuplicate
Wrong, with removeDuplicate
This view gets even uglier when I display group totals etc.