it's designed primarily for articles other than section/category/user, because only the section/category/user related to the articles will be retrieved/extracted, not all of them.
also it doesn't support two-byte characters like Chinese/Japanse/Korean/.etc. Maybe utf-8 encoding format will be much more preferred.
b.t.w, is it possible to make a incorporation/combination/marriage to Joomlarra's "ARRA User Export&Import" components? cheer!!!