Would you be able to explain how to export from DAZ to Blender back to DAZ?
It probably refers to the outfit, right?
I do go through Blender → DAZ in the final stage, but DAZ is only used to obtain the .duf scene file
— I’ve never transferred the data back in reverse.
So unfortunately, I can’t really answer your question.
If it’s about a character, as you probably know,
you just need to keep the vertex order consistent and pay attention to the high/base mesh.