Could it be possible to generate the GetDbCount method for TVF mapped TypedViews? It should be quite straight forward. Something like:

public virtual int GetDbCount(string alias, System.DateTime orderDateStart, System.DateTime orderDateEnd, 
System.Int16 orderCount, bool allowDuplicates, IPredicate selectFilter, IGroupByCollection groupByClause)
{
        var relations = new RelationCollection(new DynamicRelation(TvfCallFactory.FxOrdersByDateRangeAndCount(alias, 
                 orderDateStart, orderDateEnd, orderCount))) { SelectListAlias = alias };
        return DAOFactory.CreateTypedListDAO().GetDbCount(GetFields(), null, selectFilter, relations, groupByClause, allowDuplicates);
}

(It works) Best regards

Indeed, this is an oversight. We'll add it to the v4 templates. Thanks for reporting!

Implemented in next build.

Perfect