My spouse had applied for status change from b1 to f2 with me as f1. But when we get the approval letter from uscis it says the class of visa of my spouse is f1. And the dependant i-20 which was sent to uscis also has written "c/s from b1 to f1 for d/s ". is it okay or it is a mistake? we are confused. is my spouse has f1 status or f2 now. any sajha lawyer or who has been through this please help us. thank you