CIM Group has sold a 1920s-era, 276-unit apartment building in upper Adams Morgan for almost $10M less than what it paid a decade ago. The Argonne apartment building at 1629 Columbia Road NW. D.C.-based Bernstein Management Corp. and New York-based Tryline Capital paid $64M for 1629 Columbia Road, according to D.C. property records. The seller, Los Angeles-based…