Yes, you can directly upgrade your Server, agents and consoles to latest Maintenance Patch.
Kindly check this article from Shulk..
How to upgrade SCSP to a newer release
https://www-secure.symantec.com/connect/articles/how-upgrade-scsp-newer-release-howto65766
How to import, create and update default policies in SCSP
https://www-secure.symantec.com/connect/articles/how-import-create-and-update-default-policies-scsp-0
Regards,
JM