Here you can see my free new addon for Blender 2.8 and batch fbx export, e.g. for Unreal Engine 4, because I have an option for setting the pivot point to the center before the export:
Nice. I already got a feature request for resetting the location prior to export for my
Io-Guru add-on. I did not get around to implement it for mine yet but I am glad you got this going for those who need this specific need. It sounds like this was much needed for exports for Unreal engine .