Weird morph artifacts when creating a morph

First, I am a newbie with Daz3d, so please bear this in mind if my question seems stupid. I have tried google, so please bear that in mind too :)
I'm trying to create a morph of a Genesis 3 Female mesh in Blender. So to do that, I load the Genesis 3 female body mesh into Daz, I then set the mesh subdivision and SubD level to 0 and the mesh resolution to Base in the properties. I export it as OBJ, and I import it into Blender, making sure to keep vertex order. I modify it in Blender using a sculpting tool, working on the face, and then I export it as OBJ, and add it as a morph target to the Daz3D mesh using Morph Loader Advanced. I then test it and the part that I modified changes exactly as I want it to change. Only problem is that along with the part that I morphed, the navel vertices change their positions as well. Nothing else changes and I haven't touched the navel vertices at all. WTH is going on? Can someone enlighten me, please?
Comments
Genesis 3 loads with the navel and mouth realism morphs set to 100% by default. Before exporting you need to zero the figure to make sure these are turned off, otherwise they will become part of your morph. Best also to zero the figure you are loading the morph into before running morph loader pro.
To zero, select G3 in the scene tab, then right click on the parameters tab and choose zero-figure. I hope this helps. When G3 first launched, many people, even PAs got caught out by this, so you're in good company :)