A state appeals court revived a professional negligence lawsuit against an accounting firm in the wake of a $3.65 billion Ponzi scheme that went unnoticed in audits.The 1st District Appellate Court last week ruled the shareholders of the Lancelot Investors Fund can pursue their lawsuit against RSM US for failing to detect and warn shareholders the fund was “lending money to a business that was conducting entirely fictitious transactions.”Before its renaming in 2015, the accounting firm operated as McGladrey …