I have a very basical question to ask on the everyday use of the Ubuntu system.
I plan to migrate from a version* to another, but before that I would like to be sure if it is possible to save what has been set and that so that works properly, before doing so.
Putting the question in an another way around :
It is necessary to wonder about those points when Upgrading or it is just necessary as an Backup in case of an Upgraded System thas has gone wrong?
Thanks in advance.
*12.10 QQ >> 13.04 RR