How to make sure a clickable OrderNbr doesn't always open the first order int the grid.

I have a new processing screen set up with a column for OrderNbr.  The view is created from: 

public SelectFrom<SOOrder>
    .LeftJoin<Note>.On<SOOrder.noteID.IsEqual<Note.noteID>>
    .Where<
        SOOrder.orderType.IsEqual<wOOrderType>
        .And<SOOrder.shipVia.IsNotLike<intlShipVia>>
        .And<SOOrder.shipVia.IsNotLike<dropShipStart>>
        .And<SOOrder.status.IsEqual<SOOrderStatus.open>>
        .And<SOOrder.ownerID.IsNull>
        .And<Note.noteID.IsNull
            .Or<Note.noteText.IsNull>
            .Or<Note.noteText.IsEqual<Empty>>
            .Or<Note.noteText.IsLike<signatureWaived>>>
        .And<SOOrder.curyOrderTotal.IsLessEqual<orderTotalMaxSpend>>
        .And<
            SOOrder.paymentMethodID.IsIn<
                paymentMethodAFFIRM,
                paymentMethodPAYPAL,
                paymentMethodAFTERPAY,
                paymentMethodCCARD>
        >
    >
    .ProcessingView AISOOrder;

I have added an action as: 

public PXAction<SOOrder> ViewDocument;
    [PXButton]
    [PXUIField(DisplayName = "View Order", MapEnableRights = PXCacheRights.Select, MapViewRights = PXCacheRights.Select)]
    public virtual void viewDocument()
    {
        var order = AISOOrder.Cache.Current as SOOrder;

        PXTrace.WriteInformation($"Selected OrderNbr: {AISOOrder.Current?.OrderNbr}, OrderType: {AISOOrder.Current?.OrderType}");      

        if (order?.OrderNbr != null)
        {
            SOOrderEntry docGraph = PXGraph.CreateInstance<SOOrderEntry>();
            docGraph.Document.Current = PXSelect<SOOrder,
                Where<SOOrder.orderNbr, Equal<Required<SOOrder.orderNbr>>,
                    And<SOOrder.orderType, Equal<Required<SOOrder.orderType>>>>>
                .Select(this, order.OrderNbr, order.OrderType);

            if (docGraph.Document.Current != null)
            {
                PXRedirectHelper.TryRedirect(docGraph, PXRedirectHelper.WindowMode.NewWindow);
            }
        }
    }

The problem I have is that whichever OrderNbr I click on in the grid it always opens a new window for the first order in the grid unless I have previously clicked the Selected field.

Am I missing something really obvious that would enable the current row to be selected one?

I can provide the customization file if that would help.  I’m really tearing out my hair on this one.

Thanks for any and all help,

Phil