New guidance on shipping sensitive electronic data across borders may not be all that much help to global companies grappling with various nations’ compliance regimes, experts say.

Differing attitudes in the United States and Europe about data privacy have vexed large companies for several years, as they try to manage their obligations here for discovery in civil litigation and still respect privacy laws in Europe that restrict what companies can do with personal data relating to employees or third parties, including clients or customers, located there.