Blackberry Honey Mustard Chicken Salad

I have recently found a great little place to eat in a city not too far from here. They make the best Blackberry Chicken Salad. They finally let me have the recipe. This is great.
NEED:
5 cups Chicken breast, cooked, chopped
2 cups Celery, sliced
1 cup Pineapple chunks, drained
1 small can Mandarin oranges, drained
1 lb. or to taste White or purple seedless grapes
1 cup Pecans, toasted, chopped
3/4 cup Blackberry Honey Mustard Pretzel Dip ( in our local store...by regular jelly..you can find this..if your store does not carry it...take blackberries and mash them ( I have tried blackberry preserves ( no sugar added ) and that works great too) and honey mustard and blend to your tastes.
3/4 cup Mayonnaise

In a large bowl, combine chicken, celery, grapes, pineapple, oranges and pecans.
In a small bowl, combine mayonnaise and Blackberry Honey Mustard Pretzel Dip. Toss with chicken mixture. Chill. Serves 8.