If you are registered as a graduate student and taking classes that are undergrad/grad courses, these are counted towards your gGPA. I took undergrad classes during my masters while registered as a graduate student, and reapplied as a returning undergrad/special student, and took postbacc courses. Those I took as a Masters are gGPA regardless of whether I took them as a requirement for my MS, and those as a returning undergrad showed up as Postbacc. Hope this helps.