uuid changes- not updated in grub2

[Goh Lip]

Recently, reinstalled Hardy in same partition and converted grub legacy 
(in Hardy) to grub2 too. Of course the uuid for Hardy partition is 
changed. Karmic is already in grub2, and when I update-grub (command in 
grub2 is grub-mkconfig), to 'synchronize' grub.cfg (menu.lst in grub 
legacy), the change in uuid number is not updated in Karmic. It does not 
pose a problem to me as I had a 'first grub' partition to handle 
booting. However, as in most cases where there is no 'first grub', it 
may pose problems in booting up because grub, including grub legacy, 
boots up using uuid numbers. I also wonder if grub legacy may have 
similar issues. (I don't know now as I don't have any more grub legacy).

Thought you might want to watch out for it. Any comments on things I may 
have missed before I send a bug report?

Regards,
Goh Lip