Apparently Blizzard does expect players to start from scratch:
They probably don`t expect that enough players of the other faction will come back or start fresh, to even out these realms.
in the german boards, players from at least one of these realms are asking for free char transfers for a while already. This kind of realms exist probably everywhere…
What Blizzard does offer them, are fresh realms to start on with lvl 1.