WPF & MEF UserControl part of a larger view (In design mode)

Question

I want this usercontrol to be Created via MEF but also to have the usercontrol positioned and properties set on it in Blend... How can I force the composition of the imports that the usercontrol requires when I have a 'Concrete' reference to the usercontrol ?

What happended to PartsInitializer.Satisfy ?

Export for the UserControl

    [Export(typeof(IWOFlyOutFilterMenuView))]
public partial class FlyoutTab_WOsViewFilter : UserControl,IWOFlyOutFilterMenuView,IPartImportsSatisfiedNotification

No Imports in the Containing view as it is a concrete instance.

Thanks Greg