Hi
I am using Evernote mostly to collect news articles on several subjects of interest.
I do not always remember if I already have that article in my collection, and I may end up with duplicates. I wouldn’t hurt if Evernote asked if I want to save a copy of that particular webpage in that particular notebook.
On the other hand, it also wouldn’t hurt to be able to copy a note into another notebook simply by “copy to...” without first duplicating, then removing the “copy of” from the title, and finally assigning a new notebook for the copy.