The ability to copy Legacy Newsletter templates has been disabled since we are moving forward with our updated editor and are dedicating resources to making this editor the best it can be. Because of this we would recommend recreating your template in our updated editor. This updated editor does have the ability to be copied. With that said, are there any features in particular that are causing you to continue copying these Legacy Newsletter Templates? We welcome any feedback about this editor so we can forward your thoughts to our Product team.