Updating from Fedora 17 to Fedora 8 using FedUp and grub2

Sun Jan 20 23:51:32 UTC 2013

I have Fedora 17 installed, using grub2, and have grub2 installed in the 
/boot partition and not in the MBR. I have a multi-boot manager ( 
Acronis OSS ) in the MBR. Everything is working fine.

As I understand it I must use FedUp in fedora 17 to upgrade to Fedora 18 
since the install DVD can no longer upgrade. If I use FedUp will it work 
in my setup, ie. the software will know to update its boot code in the 
/boot partition and not in the MBR ? Do I have to re-install the Fedora 
18 grub2 in the /boot partition or does FedUp do it for me ? Are there 
any other upgrade issues for my setup ?