The answer is probably a little between the two.
Its is not uncommon for MS to target a portion of the brain or spine that was subject to a previous incident. Lesions can be formed in entirely new areas, or activity resume in an old spot.
If I had to put money on it, based on reading people's stories online, I'd say that it wouldn't recur there quickly, or be the next area of activity. But I wouldn't put much money on it, and the odds would be crappy