In audition how do you save audio channel label information in wav files?

There have been questions about this before, and reference has been made to Premiere, which also has the same issue. Unfortunately it's unfixable because the one thing that even the most comprehensive wav spec (Broadcast wav, which is what Audition uses) doesn't allow for channel names at all in its metadata.

I think that part of the reason for this is to do with the way the information is stored in the wav file. Each bit for all of the channels is stored sequentially, so all the channels are effectively intermingled into one sequence. This keeps them in order - so the most important part of the metadata as far as this is concerned is for it to have a record of how many channels in any given file that there are and the sample rate, etc, so that it can unpack them correctly. So the metadata is essentially about the characteristics of the file as a physical entity, and no thought at all was given to any means of storing and then reallocating channel names. The complete spec for broadcast wav files is freely available from the EBU, and nowhere in it can I find any reference to channel naming at all. This is why Audition doesn't really have any choice about the labels it puts on the end of the waveform displays, and won't store whatever you rename them to - there's simply nowhere to do it in the present specification.