Hi Kalena ;).  That's not a copy of the original requirement... it is the original requirement. However, in the context of a module, there are a few things that are specific to the requirement in that module that won't appear when you view the requirement anywhere else.  e.g., comments, links and tags you make in the context of a module are specific to that context.  Everything else (e.g., content, attributes, title) is common. 

Also, when you open the artifact from the module, the breadcrumb at the top will be slightly different than if you open it from the folder; in the former case, the breadcrumb is to the module, in the latter, the breadcrumb is to the folder.  I think it may be confusing in many cases because the sub-folder that the requirement is in by default has the same name as the module. 

Hope that helps.