yes i would export from Daz as an fbx as that saves the rig too, then import the fbx into blender , using blenders pose rotating the arm to check the problem and make adjustments in edit mode or using sculpt. export as an obj and import back in to daz using morph loader pro .
if the eyes looked warped , i would use this to fix eyeballs.
its simple enough to use but on occasion have to move the eyes in blender so not to see any gaps in the eye socket .
Thanks for the clarification. I'm going to try to stay in Daz and VAM, there's a limit to how much complexity an old man can handle.