To some extent, I think we may be talking past each other when I talk about values and you reply about moralities.
To clarify: would you say that this process you refer to of creating a different "morality" (whether it's different by virtue of being superior or extrapolated or something else is beside my point right now) keeps values fixed, or not?
I think it depends on what is meant by "values". I would say that the values change while the fundamental motivations are fixed, though Vladimir's response makes me unsure about this. Another way of saying it is that supergoals are fixed but the "Friendliness content" changes. (Though I haven't seen the phrase "Friendliness content" around much lately, perhaps it's being discarded in favor of more formal terms.)
Maybe another useful distinction would be between Friendliness structure and content (see the CFAI entry on the wiki).
If it's worth saying, but not worth its own post, even in Discussion, it goes here.