Thank you Lindy. Your solution makes sense. The transcriber's note is a good way to make it clear to the reader, so I'm good with that.
Except for the fact that it was requested this way, do you see any good reason why something like this even needs to be in Nemeth Code? It seems to me UEB has everything needed to represent this material. If the reader is proficient in UEB, then what advantage is there in going back and forth between codes? I really want to understand the reasoning behind these requests.