I have reproduced the problem with release-upgrader-apt 0.8.16~exp12ubuntu1~upgrader1 in lucid-updates and have verified that the version of release-upgrader-apt 0.8.16~exp12ubuntu1~upgrader1 and ~upgrader3 in -proposed fixes the issue.
On https://jenkins.qa.ubuntu.com/job/precise-upgrade-lucid-desktop/ runs 53 to 57 are upgrades with -proposed enabled, other jobs are with -updates
Other profiles upgraded correctly with -proposed enabled.
I have reproduced the problem with release- upgrader- apt 0.8.16~ exp12ubuntu1~ upgrader1 in lucid-updates and have verified that the version of release- upgrader- apt 0.8.16~ exp12ubuntu1~ upgrader1 and ~upgrader3 in -proposed fixes the issue.
On https:/ /jenkins. qa.ubuntu. com/job/ precise- upgrade- lucid-desktop/ runs 53 to 57 are upgrades with -proposed enabled, other jobs are with -updates
Other profiles upgraded correctly with -proposed enabled.