Deprecated characters?

[JFC Morfin]

At 18:03 17/07/2008, John C Klensin wrote:
>But it does seem to me that there is a more general
>question here at least for the future and especially if the
>reason for deprecating a character is to replace it with a
>different preferred (or normalized) form.

This seems to indicate that the proposed unique text should not only 
be clear to developpers but also to operators. If a character is 
replaced, should it not be suggested that the domain names using be 
automatically updated ?
jfc