Heat oven to 400°F. Make pie crusts as directed on box for Two-Crust Pie using 9-inch glass pie plate. In 2-quart saucepan, mix sugars, cornstarch, salt and nutmeg; stir in reserved gooseberry syrup. Cook over medium heat, stirring constantly, 6 to 7 minutes or until thickened. Stir in gooseberries and cherries.