A federal appeals court last week revived a previously dismissed class-action lawsuit against four financial institutions brought by investors that purchased a $1.32 billion offering of MBS that later turned sour. The U.S. Court of Appeals for the Second Circuit vacated and reversed a lower court’s decision to dismiss the case two years ago against the Royal Bank of Scotland Group, Deutsche Bank AG, Wells Fargo Advisors and NovaStar Mortgage. The New Jersey Carpenters Health Fund was lead plaintiff. In 2007, the New Jersey fund sued...