For what it's worth, some Pillars I characters literally would not work properly in Pillars II, and would have to be rerolled anyways. As an example, my character from Pillars 1 was a Paladin from the Sheildbearers of St Elcga that favored Greatswords, and they would get no value from the order passive in Pillars II. This would also prevent any imported characters from Multiclassing.