Unfortunately there is no option to backup groups or locations structure from SEPM. Closest you can do is enable the AD synchronisation that will mirror your OUs from AD to the SEPM groups structure. Here some overview over that:
https://www-secure.symantec.com/connect/articles/advantages-and-disadvantages-active-directory-symantec-endpoint-protection-manager
Organizational Units from Active Directory in Symantec Endpoint Protection 11.0
http://www.symantec.com/docs/TECH102546