Drain pineapple, reserving juice in a measuring cup, and add water to juice to measure 1 cup. In a saucepan, heat juice to boiling, remove from stove and stir in raspberry gelatin.When gelatin is dissolved, pour into a medium bowl with cream cheese and mayo. Mix until cheese is well incorporated. Add pineapple, cranberry sauce and walnuts. stirring well. Fold in Cool Whip.
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