2013 to 2003


New Member
Outlook version
Outlook 2010 32 bit
Email Account
Exchange Server
I know this is an odd question... a new client is still running exchange 2003 and is absorbing another business that runs O365. If they make pst files from their outlook2013, will I be able to import them ok? 2003 and 2013 pst's are unicode, but are there any issues with going backwards like this (2013 pst's to a 2003 environment)?