what i did was just ssh'ed into /var/root/library/addressbook before updatnig and backed up those files and after updated them just put them back there and it worked just fine tho it sounds too late for you
Hmm... I didn't lose a single contact or setting on my phone. My 1.1.1 phone didn't even lose its NES ROMs from when i still had 1.0.2. Except for my Favorites were wiped from contacts, but no biggy. I also sync contacts with Windows Address Book... dunno if that matters.