Any advise on how to file amended return in my situation? I have two files in two different folders.  Two files with different information, one for actual return and one for analysis purposes.  The actual return has attachment on it.    

When preparing amended return, I am planning on using the actual return file with attachment.  Does amended return attached originally federal return?  Does attachments go with the return when amended return is filed? 

Thank you so much for any suggestion.