Exchange 2010 Journaling and EV DL Expansion

Ever since Exchange Envelope Journaling was released, we've always recommended to enable DL Expansion in the Journal policy, due to the additional functionality and benefits this provides, per this technote:

http://www.symantec.com/docs/TECH53025

However, with Exchange 2010 (and/or later) is EV DL Expansion still providing any additional functionality or benefit?

Is there an updated technote that describes what EV DL Expansion accomplishes with Exchange 2010 and later?

Thanks.