I also tested an upgrade from 12.04 to 14.04 with ESM enabled and it succeeded in that ESM continued to be enabled after the upgrade.
bdmurray@clean-precise-amd64:~$ grep "release-upgrader version" /var/log/dist-upgrade/main.log 2019-05-06 10:47:09,531 INFO release-upgrader version '0.220.11' started bdmurray@clean-precise-amd64:~$ grep hidden-u /var/log/dist-upgrade/main.log 2019-05-06 10:47:16,812 DEBUG examining: 'deb https://hidden-u:<email address hidden>/ubuntu precise-updates main' 2019-05-06 10:47:16,812 DEBUG entry 'deb https://hidden-u:<email address hidden>/ubuntu trusty-updates main' updated to new dist 2019-05-06 10:47:16,812 DEBUG examining: 'deb https://hidden-u:<email address hidden>/ubuntu precise-security main' 2019-05-06 10:47:16,812 DEBUG entry 'deb https://hidden-u:<email address hidden>/ubuntu trusty-security main' updated to new dist
I also tested an upgrade from 12.04 to 14.04 with ESM enabled and it succeeded in that ESM continued to be enabled after the upgrade.
bdmurray@ clean-precise- amd64:~ $ grep "release-upgrader version" /var/log/ dist-upgrade/ main.log clean-precise- amd64:~ $ grep hidden-u /var/log/ dist-upgrade/ main.log /hidden- u:<email address hidden>/ubuntu precise-updates main' /hidden- u:<email address hidden>/ubuntu trusty-updates main' updated to new dist /hidden- u:<email address hidden>/ubuntu precise-security main' /hidden- u:<email address hidden>/ubuntu trusty-security main' updated to new dist
2019-05-06 10:47:09,531 INFO release-upgrader version '0.220.11' started
bdmurray@
2019-05-06 10:47:16,812 DEBUG examining: 'deb https:/
2019-05-06 10:47:16,812 DEBUG entry 'deb https:/
2019-05-06 10:47:16,812 DEBUG examining: 'deb https:/
2019-05-06 10:47:16,812 DEBUG entry 'deb https:/