Originally Posted by: BrotherHades 
Sadly as most G9 grafts require rigidity maps to work with the ways Daz changed the mesh this go around, it isn't going to be a possibility getting grafts to work the way they did with G8 or G3, as rigidity mapping blocks most underlying morphs. Unless the graft creator can build the morphs into the graft (Which is hard with third party morphs as the graft vendor has to be able to get permission from the third party vendor to basically build their morph into the graft) then most of the morphs aren't going to work as well with G9 grafts.
I mean there may be a better way of doing things that Daz Published Artists have access to, but if so Daz isn't sharing the tools or releasing the documentation on how to get grafts to work with Genesis 9 like they did with Genesis 8, so as far as the vendors here are concerned they had to use whatever methods for them to get it to work, and as most have said in threads around when they were working on the grafts for G9, or the G9 grafts first released, the workaround they found was adding rigidity to the graft surfaces.
With a bit of setup work, it is quite easy to create your own morphs for free using Daz and Blender.
I first had to make a Breastacular conforming figure (not a geograft) by loading the graft into daz at base resolution, exporting that as an OBJ and exporting a base G9 figure. Import both into blender and use the shrinkwrap modifier to shrink the breastacular obj onto the G9 mesh. Export the modified breastacular and import it back into Daz and use the Transfer Utility to create a conforming figure that should now fit flush with the G9 mesh, and the shape should auto follow any character morphs you load into G9. Save this as a seperate wearble item and you can use it to create morphs for any other figure.
With this saved as a seperate wearable, whenever I get a new charater (or create/tranfer one) I load load G9, I make a note of the body morph name e.g. Victoria9_body_bs_Body and dial in that morph, make sure any other scaling, proportion, or height morphs are at zero, and load the new breastacular wearable. You'll notice some artifacts from the G9 mesh are sometimes visible in the form of odd square shaped creases, export the G9 mesh on its own at sub d 3, and the new breastacular wearable at base resolution. Import both into blender (G9 may take a while at Sub D 3) and again use the shrinkwrap modifier to smooth out any artifacts from the breastacluar mesh. Export the modified breastacular mesh, saving it with the same name as the G9 body morph that we noted earlier.
In Daz load the original Breastacular graft (not fitted to G9) and use Morphloader Pro to import your newly smoothed morph you just created in blender. Use the Joint editor to Adjust Rigging to Shape, in the rigging dialogue box uncheck everything except the two Breast bones, Areola, and Nipple bones for each side for both the "Bones to Adjust" and "Influencing Face Groups" windows. Run an ERC Freeze, scrolling through the dialogue window to check that only bone start/end points are checked, uncheck any smoothing modifiers that may be present, then save the morph as a morph asset. Start a new scene with your new character, load the original Breastacular graft and your new morph should be loaded following your base character perfectly.
Note that this will need to be done for every morph you want to use with Breastacular fitted, I spent a day using this mrthod to transfer over all of Zevo's breast utility morphs, as well as a couple of HD nipple morphs and some custom bend morphs I'd made for G9, but I consider it time well spent given the end results, and as I am not going to be re-selling any of the morphs I have created for my own personal use, I wont run into any copyright issues.
Maybe Meipe could include a similar type of wearable as a Dev Load option in a future update with a similar set of instructions for people to be able to create their own character morphs in the future.