Mix together chicken, water chestnuts, and celery. Blend together sour cream, mayonnaise, curry powder, soy sauce, and lemon juice; pour over chicken mixture. Stir in grapes. Chill several hours.
Preheat oven to 350 degrees. ... with layer of chicken. Set aside. Mix soup with mayonnaise and lemon juice. Spoon soup mixture over ... Serves 4 to 6.