//Pull out highest priority season.
        IList seasons = this.edSeasonsEditor.Product.ProductSeasons;
        //No good doing stuff if there's no seasons.
        if (seasons.Count == 0) return;

        ProductSeason highestSeason = seasons[0];
        ProductSeasonList results = new ProductSeasonList(highestSeason);
        //Do projections
        while (seasons.GetEnumerator().MoveNext())
        {
            ProductSeasonList current = new ProductSeasonList(seasons.GetEnumerator().Current);
            results = results.ProjectOnto(current);
        }
        //Save results to flat periods table