Upgrading from Norton Internet Security 2009 to 2012

Hi everyone.  My inlaw's computer crashed and I'm basically rebuilding it for them from scratch.  They are current subscribers to NIS 2009 with a subscription that runs through the end of December.

 

Since I'm basically rebuilding their system, I'm thinking of recommending they move to the latest NIS 2012.  Can they transfer the remaining months of their 2009 subscription to the 2012?  Or, will they basically lose their NIS 2009 subscription if I move them directly to 2012?

 

Thanks!