(Copied from original User Voice forum)
"It's common in my work to use a couple of base reference files throughout a project, so it is VERY common to accidentally create nested duplicate references of these base files when creating references.
Simply ignoring nested duplicate references should be the default behavior I think i.e. when you import/create a newly referenced file, and it already contains within it references that already exist in the file you are currently working in they should be disregarded."
