Cook noodles according to package directions. Meanwhile, in measuring cup combine reserved mushroom and orange liquids; add water to equal 1 cup liquid. Blend in cornstarch; set aside. In large skillet melt butter and saute mushrooms, shrimp, pea pods, broccoli, green onions and garlic powder until shrimp are pink. Add reserved liquid, stirring until slightly thickened. Toss shrimp mixture with hot cooked noodles; gently blend in orange segments and soy sauce.