i did try to backup the cydia stuff first also . used xbackup and PKGBackup neither worked
but i did do what u did last month not sure what app it was but i emailed myself the lists also
didn't take long to add the sources and download the tweaks i liked . my upgrade was a bit tuff .
it tried to upgrade but failed ,itunes wanted to do a full factory restore ,
i thought i lost everything . then it did a backup restore,
then i jailbroke it and all was good ,
the apps i too reinstalled did remember my settings also only thing i lost was some music i guess i did not sync my music