Comment # 2 on bug 1221036 from Lubos Kocman

I think that makes sense since you provide it already.

Keep in mind that it should probably work the other way too.

So if you'd migrate openSUSE-> SLES -> openSUSE (System AG does it as a sort of
a cleanup) I guess it would work but person couldn't install any future update
of openSUSE-build-key, nor PH release as the PH channel is not avialable.

We could document that one or we could e.g. obsolete the previous relate of
PacakgeHub-release from the build-key. Something like that.