This is also posted at https://github.com/rails/rails/issues/16269 but I just wanted to get more peoples thoughts on if this is truly a bug or not. In my migration I'm converting my posts table to use uuids instead of the default integers via something like the following: ... create_table :posts_temp, id: :uuid do |t| t.string :title ... end post_temp_model = Class.new(ActiveRecord::Base) do self.table_name = :posts_temp end Post.all.each do |post| post_temp = post.dup.becomes(post_temp_model) binding.pry post_temp.name # => "foobar" post_temp.save # => true post_temp.reload post_temp.name # => nil end ... When running this and inspecting what post_temp.title is the value appears to be there. When callingpost_temp.reload and inspecting the title again however it's nil. It seems as though the value is not being saved to the database. Is this a bug or am I doing something incorrectly here? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-core+unsubscribe@googlegroups.com. To post to this group, send email to rubyonrails-core@googlegroups.com. Visit this group at http://groups.google.com/group/rubyonrails-core. For more options, visit https://groups.google.com/d/optout.