Chris has it! And to be clear, we only require a slow (1 day) provider changeover in the case that you want to announce your old provider's sub-prefix at a new provider. For instance, if you are an AT&T customer using a 12/8 sub-prefix and change providers but keep the prefix, the prefix will look funny coming from another originator for the first day and be delayed. All other methods of changing providers will not be interfered with. Josh
I had thought Josh's paper (or maybe not josh, whomever it was) said something along the lines of: 1) if more than one announcement prefer 'longer term', 'older', 'more usual' route 2) if only one route take it and run!
So.. provided Connexion withdraws from 'as-germany' and announces in 'as-atlantic ocean', and so on there would only be 1 route, and you'd fall to step 2.
(yes, the paper was more detailed and there were more steps...)