By Jan Wolfe (Reuters) – Former U.S. President Donald Trump must testify under oath in the New York Attorney General’s civil investigation into his business practices, an intermediate state appeals court ruled on Thursday. A four-judge panel unanimously upheld a trial court decision from February enforcing subpoenas for Trump and his two eldest children, Donald Trump Jr. and Ivanka Trump, to provide deposition testimony in Attorney General Letitia James’ investigation. “Once again, the courts have ruled that Donald Trump must comply with our lawful investigation into his financial dealings,” J…