Comment 5 for bug 241431

Is it correctly understood, that this should fix the edgy -> feisty upgrade?
I've tested this by having an edgy install with edgy-proposed enabled and trying to upgrade; this still produces the errors about "no known repos to use" and offering to just rewrite, which doesn't work (it tries to fetch the feisty packages from old-releases).
Either this fix doesn't help; or my install simply doesn't fetch the package from feisty-proposed. If I have an edgy installed with edgy-proposed repos added, will it the end up fetching this new package? And can I in anyway test if it does that?