It all boils down to this: your automatic top-up will remain in the same form as it is today. Every following automatic top-up will from now on be based on your last Focus bundle. In other words, if today you go for the Focus bundle with more data, in the future the same bundle will be topped up every month. Until you would switch to a different bundle, obviously. In which case that bundle would become default. This is also the case if you top up using the Viking App.