I'm a bit puzzled, DKS is Divinity 2... do you mean Original Sin 2? In that case I suppose I hadn't really thought about it but it does seem that the armour and general appearance (and map...) is completely redone with each new release.
It is possible to import and export models from DKS and I've done so myself a fair bit, though I would need to check the copyright issues before I could comment further. In fact I'll start asking questions now before I forget, though that doesn't necessarily mean I'll get an answer.