Thanks for reporting this issue and helping in making Ubuntu better and sorry since it has been a while since you reported it. I will post your request to the bug-team to see if your request can be considered as a valid feature request and if work can be done for it.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1068591 Title: release upgrade should deactivate /etc/apt/preferences* To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1068591/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
