Is it possible that the VisibleRangeChanged event is not fired anymore when GroupFilter changes?
I do use a Viewmodel that implements a GroupFilter as well as a delegate for the VisibleRangeChangedCommand.
The delegate for VisibleRangeChangedCommand loads data from a database. When updating GroupFilter through the ViewModel in Q1 2011 VisibleRangeChangedCommand got called but this is not the case in Q2 2011.
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