Yeah, I guess you're right. I was just hoping..
It would be interesting to see some statistics on this, the likelihood of an upgrade failing, in general terms.
I do have a full backup of the config and that box has no packages installed either, I'll just try to load it after install then. But if I have to do this process every time an upgrade is available it's kinda time consuming. Let's hope it's a one timer then.
Also, if I'm not mistaken there's some way of having it picking up a config file during install, like from USB or something, I'll try find it through the search feature.