PropertyGridControl custom RowOperation doesn't retrieve all properties

Hi there,
I've a propertygrid control linked to a XtraGridView.
At runtime all gridview properties are displayed, but I've some issues when trying to access these properties via code using a custom class.

C#
public class SetVisibleRowOperation : DevExpress.XtraVerticalGrid.Rows.RowOperation  
{  
    public List AllowedProperties { get; set; }  
    public override void Execute(DevExpress.XtraVerticalGrid.Rows.BaseRow row)  
    {  
        Console.WriteLine(row.Properties.Caption);  
        row.Visible = AllowedProperties.Contains(row.Properties.Caption);  
    }  
}  

I'd like to hide all properties except these:

C#
private void checkPropertyGridRowsVisibility()  
{  
    var visibleOperation = new SetVisibleRowOperation()  
    {  
        AllowedProperties = new List { "Options", "OptionsBehavior", "OptionsFind", "OptionsView", "AllowFixedGroups",  
        "AllowPartialGroups", "AutoExpandAllGroups", "AllowFindPanel", "AlwaysVisible", "ShowFooter", "ShowGroupPanel", "ShowIndicator" }  
    };  
    propertyGridControl.RowsIterator.DoOperation(visibleOperation);  
}  

But it seems all properties under OptionsView and similar (3rd level) are not accessed  by the iterator ¿?
In the Execute method I can see (when debugging OptionsView property) that row.HasChildren value is TRUE but row.HasChildRows has no items inside ¿?
Plus, there is a Rows property (only visible in the Quickwatch debug window) that is showing the correct items…

Maybe I'm missing something?
The only thing I need is hide all properties that are not in list…

L