Lots of changes happening this spring on the Rockville Pike Asian restaurant scene. Umi Sushi & Seafood Buffet, a New York restaurant making its first move into Maryland, is taking over the former Miller’s Ale House space at Congressional North Shopping Center. Over at Ritchie Center, two neighboring restaurants have re-branded: Live Crawfish & Seafood is now called ÔC & Crab Seafood Restaurant, while CM Chicken is now Gama Korean Chicken. Meanwhile, Damso Korean BBQ is replacing Saffron Indian Cuisine at Woodmont Station.