Carmen,
I'm glad you brought this up again! Since my last post I discovered a great (and obvious - was kicking myself) work around to the editing problem! If you use a slide master for the question itself, and the only thing on the slides themselves are the answers and the answer markers, then it becomes much more simple.
Could you rephrase the question you're trying to ask? I'm sorry there seems to be a typo, and I don't follow you.
I've attached an example, using a course that I'm currently working on. Hopefully that'll help!
slide feedback example.pptx