I don't use it, but I tested it after reading your post and found the information there. It works. Then, it might work because my block library mostly contains attributes for these fields.
As I edit & build blocks in our library, I try to make sure they all contain appropriate attributes. I prefer to be able to have the option to make mass-changes using global attribute editing techniques. I'm sure there are things I haven't learned to do yet with ACAD-E that I already have a way to do using standard ACAD, LISP & SCRIPTs; but I've noticed that there are certain things ACAD-E won't do without the appropriate attributes. Try globally changing the part number of all terminals in a drawing, or across all drawings, for example. If all the terminal block symbols have attributes, this is easily done globally using -ATTEDIT. Put it in a .scr file, and you can run it across the entire project using Project Wide utilties - Run Command Script.
Am I missing something, or does this operation otherwise normally require the designer to run Edit Component on each terminal in the schematic? If not, someone please teach me the "modern" way. 😉 By the way, I am aware you can export to a spreadsheet, make your changes, and re-import, but that seems to me more complicated than just staying in ACAD and using -ATTEDIT.