The translation focus in fact isn't relevant; that was my mistake. Sorry.
The problem is that po/ubuntu-release-upgrader.pot in the upstream trunk branch needs to be regenerated against data/gtkbuilder/DistUpgrade.ui in that same branch. See:
http://bazaar.launchpad.net/~ubuntu-core-dev/ubuntu-release-upgrader/trunk/view/head:/po/ubuntu-release-upgrader.pot
The translation focus in fact isn't relevant; that was my mistake. Sorry.
The problem is that po/ubuntu- release- upgrader. pot in the upstream trunk branch needs to be regenerated against data/gtkbuilder /DistUpgrade. ui in that same branch. See:
http:// bazaar. launchpad. net/~ubuntu- core-dev/ ubuntu- release- upgrader/ trunk/view/ head:/po/ ubuntu- release- upgrader. pot