Ya that was a little annoying, but to be fair the tree is much different so I think they would have given you the ability points instead but you would pretty much be done with half the tree if you were top lvl in Witcher 2. Would kinda ruin the grind a little ya'know?
Edit: As with all current mods for the Witcher 3. They are on Nexus and in order to download them must be a "free member". In fact when you try to register, you MUST choose a subscription in which you pay to download mods. But the way around it.. just click continue at the bottom and you'll skip that part. So happy modding!