Compartment items not displayed in DSL diagram

parentShape.FixupChildShapes(modelElement);

private Store LoadStore()
{
    var store = new Store();
    store.LoadDomainModels(typeof(CoreDesignSurfaceDomainModel), typeof(ActiveWriterDomainModel));
    return store;
}

private void LoadDiagram(Store store)
{
    using (var tx = store.TransactionManager.BeginTransaction("tx", true))
    {
        var validator = new ValidationController();
        var deserializer = ActiveWriterSerializationHelper.Instance;
        deserializer.LoadModelAndDiagram(store,
            @"....ActiveWriter1.actiw", @"....ActiveWriter1.actiw.diagram", null, validator);
        tx.Commit();
    }
}

private DiagramView CreateDiagramView()
{
    var store = LoadStore();
    LoadDiagram(store);

    using (var tx = store.TransactionManager.BeginTransaction("tx2", true))
    {
        var dir = store.DefaultPartition.ElementDirectory;
        var diag = dir.FindElements<ActiveRecordMapping>().SingleOrDefault();
        var view = new DiagramView(){Diagram = diag};
        diag.Associate(view);
        tx.Commit();

        view.Dock = DockStyle.Fill;
        return view;
    }
}

protected override void OnLoad(EventArgs e)
{
    var view = CreateDiagramView();
    this.Controls.Add(view);
}

private Store LoadStore()
{
    var store = new Store();
    store.LoadDomainModels(typeof(CoreDesignSurfaceDomainModel), typeof(ActiveWriterDomainModel));
    ActiveWriterDomainModel.EnableDiagramRules(store);
    return store;
}

/// <summary>
/// Enables rules in this domain model related to diagram fixup for the given store.
/// If diagram data will be loaded into the store, this method should be called first to ensure
/// that the diagram behaves properly.
/// </summary>
public static void EnableDiagramRules(DslModeling::Store store)
{
    if(store == null) throw new global::System.ArgumentNullException("store");

    DslModeling::RuleManager ruleManager = store.RuleManager;
    ruleManager.EnableRule(typeof(global::Altinoren.ActiveWriter.FixUpDiagram));
    ruleManager.EnableRule(typeof(global::Altinoren.ActiveWriter.ConnectorRolePlayerChanged));
    ruleManager.EnableRule(typeof(global::Altinoren.ActiveWriter.CompartmentItemAddRule));
    ruleManager.EnableRule(typeof(global::Altinoren.ActiveWriter.CompartmentItemDeleteRule));
    ruleManager.EnableRule(typeof(global::Altinoren.ActiveWriter.CompartmentItemRolePlayerChangeRule));
    ruleManager.EnableRule(typeof(global::Altinoren.ActiveWriter.CompartmentItemRolePlayerPositionChangeRule));
    ruleManager.EnableRule(typeof(global::Altinoren.ActiveWriter.CompartmentItemChangeRule));
}