Pivot grid not updating at filtering

[Guillermo]

Hi.

I´m working on a rad pivot grid but shomething strange it´s hapening. The Grid is updating well if i drag and drop fields, etc, but it´s failing at filtering. If i try to collapse a row or change a filter, then the Grid simply does not update.

It´s no problema with data, i use the same method and data in others grids and they are working perfectly. 

Any suggestion??

<telerik:RadPivotGrid ID="JiraPivotGrid" runat="server" Width="100%" Height="100%"
    AllowPaging="true" AllowSorting="true"
    EnableConfigurationPanel="True" EnableZoneContextMenu="True"
    OnPivotGridCellExporting="JiraPivotGrid_PivotGridCellExporting"
    OnCellDataBound="JiraPivotGrid_CellDataBound"
    OnNeedDataSource="JiraPivotGrid_NeedDataSource"
    OnFieldCreated="JiraPivotGrid_FieldCreated"
    >

    <PagerStyle AlwaysVisible="true" Position="Bottom" Mode="NextPrevAndNumeric" />

    <ClientSettings EnableFieldsDragDrop="true">
        <Scrolling AllowVerticalScroll="true"></Scrolling>
    </ClientSettings>

    <RowHeaderCellStyle BackColor="GradientInactiveCaption"></RowHeaderCellStyle>

    <ColumnHeaderCellStyle BackColor="GradientInactiveCaption"></ColumnHeaderCellStyle>

    <ExportSettings IgnorePaging="true" OpenInNewWindow="true" FileName="JiraReport" />

     <Fields>

        <telerik:PivotGridRowField  DataField="Area" UniqueName="Area" Caption="Area" />
        <telerik:PivotGridRowField  DataField="Responsable" UniqueName="Reponsable" Caption="Responsable" />
        <telerik:PivotGridColumnField  DataField="Mes_cierre" UniqueName="Mes_cierre" Caption="Mes cierre" />

            <telerik:PivotGridAggregateField DataField="Horas_Totales" UniqueName="Horas_incurridas" Caption="Horas incurridas" />
        <telerik:PivotGridAggregateField DataField="Horas_certificadas" UniqueName="Horas_certificadas" Caption="Horas certificadas" />

    <telerik:PivotGridReportFilterField DataField="Anyo_cierre" UniqueName="Anyo_cierre" Caption="Anyo_cierre" />


    </Fields>

</telerik:RadPivotGrid>

[Guillermo]

No suggestion? The matter seems to be that filtering postback returns grid to initial state. Shometing related?

[Guillermo]

Finally i solved it. The grid was inheriting a disabled ViewStateMode. Thanks to everyone that think in possible solution for a while.