When I import that utf-8 file
Is this the file you uploaded to pastebin? Frankly I do not see those characters listed in post 18 in that file. If the missing characters you list in post 18 are suppose to be in the text, try creating a ZIP file of the text (both the .txt and the source Google Doc spreadsheet, maybe saved as an Excel or other spreadsheet type) and posting it somewhere like dropbox. Then provide a link.
The reason it will not import as Unicode, I believe, is that it is a UTF-8 file and is considered as ASCII for import.
Mike