Combine first 5 ingredients in a bowl, stirring until blended. Combine juice and cherries in a small bowl. Microwave at high for 30 seconds; let stand 10 minutes. Drain and coarsely chop cherries. Stir cherries into cheese mixture.
Spoon 3 tablespoons cheese mixture in the center of each crepe; fold sides and ends of crepe over. Place, seam side down, in a 13 x 9-inch baking dish coated with cooking spray. Cover and bake at 350° for 15 minutes or until blintzes are thoroughly heated. Sprinkle with powdered sugar. Serve immediately.