Perhaps online and offline were not the best words to pick.if I am just playing with my friend online (hamachi) will I be able to edit it?If I understood correctly:
Offline mode, yes.
Online mode, no.
What we are considering 'offline saves' are the local save files you have now. we don't plan to do anything to them but we will make sure players who aren't using gamejolt get the key multiplayer features. you will still get all the updates.
Playing a gamejolt character will have benefits but they relate to multiplayer. for those that just want to mess around with a pokemon game with their friends we will continue to support local saves and direct tcp connections.