Which classes were yours? I don’t recall.
When I updated mine post launch, I found some skills effects were altered, so I had to make sure the skills were scripted properly. In some cases I just needed to run the Localization batch file, which syncs your class/skill names with the game. That is a newer feature that came recently. So if you see string names instead of the proper names in game, that’s the issue.
So I would say you need to re-setup your hero skills, and perhaps your localization file.
Depending on how far back your talking about you may want to add alt color sets. For a while it seemed like you had to but that does not seem to be the case anymore.
Current class mods/variants:
Shadow-Dancer, Maiden, Knight, Dame, Evoker, Warlock, Apothecary, Psionic, Treasure Hunter, Gladiator, Blackguard, Valkyrie, Shadow Valkyrie, Vampiress, Lycan, Court Magus, Songstress.
DOWNLOAD FROM: http://www.nexusmods.com/darkestdungeon/?
My personal Art work and Novels: www.stevenmouland.com