"From D3 onward scaling DAZ figures hands breaks the fingers."

1. Open cr2 with cr2-editor
2. Seek 2nd instance of "actor rHand:1"
3. Open "channels"
4. Rename the four hand scale channels from "scale-whatever" to "propagatingScale - whatever"
5. Do the same for the other hand.
6. Resafe cr2.

Enjoy your new scaleable hands.

But generally speaking, scaling (or "morphforming") is BAD and should be avoided as it invariably distorts the joints and messes up conforming clothes.