This bug was fixed in the package update-manager - 1:16.04.7
--------------- update-manager (1:16.04.7) xenial; urgency=medium
* update-manager: Clarify that the "-d" switch is only for upgrading from the latest supported release to the development release, not any release. (LP: #1700829)
-- Brian Murray <email address hidden> Mon, 17 Jul 2017 09:31:17 -0700
This bug was fixed in the package update-manager - 1:16.04.7
---------------
update-manager (1:16.04.7) xenial; urgency=medium
* update-manager: Clarify that the "-d" switch is only for upgrading from
the latest supported release to the development release, not any release.
(LP: #1700829)
-- Brian Murray <email address hidden> Mon, 17 Jul 2017 09:31:17 -0700