There's import bugs with Daz Studio, concerning Genesis 3 and higher. I trick Daz into correcting the animation on it's own, by adding an additional frame and moving the animation forward one frame. This creates a "Zero Frame" pose. If you import it into Daz, save it as a Pose Preset and THEN load it on the proper Figure, if you Reset the Figure on the Zero Frame, it corrects all the keyframes following it. Then, you select all the frames and move them back one frame. It's an old animation trick from 20 years ago. 😛
It works perfect for any Figure Genesis 2 or lower. You get the occasional gimbal lock bug on individual frames that you'll have to manually correct from time to time, but it's not too serious and typically only affects one or two animations in an Animset. It doesn't work for Genesis 3 or 8. The Feet on the Start pose aren't correct. I'm not sure the reason why. If you compare the same animation to a lower Generation figure, you can see it.
It might be wise to just use Bone Minion for Genesis 3 and higher. Technically, you could just use it for everything and just retarget in Cascadeur to only Genesis 2, if you want animations for just Genesis 8. I've successfully retargeted to Generation 3, Horse 2 and Big Cat 2, using Cascadeur.