Courtesy of Nilaus' 0.17 launch Twitch stream.
Instead of undoing the upgrade, it undo-ed the creation of blueprints.
Undo (ctrl+z) should work on upgrade planner & upgrade planner changes to blueprints
Moderator: ickputzdirwech
Re: [0.17.0] Undo (ctrl+z) does not work on upgrade planner changes to blueprints
The feature just hasn't been added, so moving to ideas and suggestions
(I think it should, but its not a bug that it doesn't)
(I think it should, but its not a bug that it doesn't)