Hasn't been mentioned yet, but if you don't want that hole appearing you can manually shrink the mesh in an external program like blender. Merge the look with
https://hub.virtamate.com/resources/morph-merge-and-split.15048/ and load it up into Daz with
https://hub.virtamate.com/resources/vam-to-daz-2.888/ Once it is in Daz change the resolution level to base and subdivision level to 0. Export to obj and edit with your program of choice. For blender you need to check both keep vert order and poly groups on the right under geometry when importing. Once you are done with your edit, when exporting it, you need to check the same boxes.
Back in daz, edit>figure>morph loader pro and select the obj you exported. It will automagically create a morph of that edit for the genesis 2 figure. The rigging will be messed up however, but that's a pretty easy fix. Go to edit>figure>rigging>adjust rigging to shape. for the morph you are trying to make, the settings are probably fine as is. click accept and it will automagically adjust the rigging to fit. Find the morph that was made and right click on it and enter edit mode, right click on it again and click ERC freeze. Again the settings should be fine, click accept.
Time to bring it back into VAM. Go to file>save as>support asset> morph asset and select the morph and save. Navigate to the asset directory listed when you saved (mine is C:/Users/USERNAME/Documents/DAZ 3D/Studio/My Library) and copy the dsf file it saved to into %vaminstall%\Custom\Atom\Person\Morphs\female Vam will generate the morph then next time you load it up. Once in VAM, apply the morph and adjust all affected control points under the physics tab. Set all the joint drive angles to 0 and the joint drive spring/max force to ridiculously high number like 10000000. Finally you can clean up the colliders with
https://hub.virtamate.com/resources/collider-editor.183/