It’s the new rigging that started with G3. Exporting cr2’s works fine for G2 hair. If you have the pro version, you can import the obj you exported from DS and use a similar V4 hair as the doner in the setup room. Transfer the rigging and the morphs. This almost always works pretty well for hair that drapes down the back or over the shoulders in front. Bangs generally transfer well. It’s a crap shoot with other movement morphs.