In a large bowl, dissolve 1 package of gelatin in 3/4 cup boiling water.
Add 1 cup cold juice; stir.
Refrigerate until partially set, about 1 hour.
Stir in cherries, pineapple and pecans.
Pour into a 7-cup gelatin mold. Refrigerate for 1 hour or until firm.
In a small bowl, dissolve the remaining gelatin in remaining boiling water.
Stir in remaining cold juice. Refrigerate until partially set, about 1 hour.
Fold in whipped topping. Carefully spread over top of gelatin mixture in mold.
Refrigerate for 4 to 6 hours or until firm. Unmold onto a serving plates.