Backup Exec Upgrade to 2014

Hello,

Currently we have BE 2012 installed in windows 2008 , we are planning to install 2014 in windows 2012

Can we install BE 2014 fresh and copy the catalogue from BE 2012 , will the backup/restore works ?

or 

Just upgrade 2012 to 2014 on windows 2008 and install BE 2014 on windows and move it ?

I believe Be 2014 support 2012 Windows agent  does it require reboot when upgrading the agent to 2014 ?

Please help...

Regards

GB