Accordance converts to Unicode when you "leave" Accordance. Perhaps you are sometimes going straight into Word in Parallels without ever bringing the Mac Finder or another application to the front, and the conversion hasn't occurred or isn't triggered.
Ah! I had not known this was necessary, but it would explain what appeared to me an erratic "sometimes it works sometimes it doesn't". I've been trying this all day today and it appears to work just fine.
Thank you, Helen!