Up to you honestly. Since it's been so long that you don't even recognize the spells being changed, I would personally start a new character since you probably aren't that far into the Grand Company and whatnot.

Also, the last patch you can get the goobbue in is 1.23A.

1.23 itself is supposed to be out by the end of July, so I would expect the last day to be early-ish August.