While I really do not know the answer to your question, I do not want you not to have a reply.
I had my first major flare (and perhaps my only) in March of 2007. I was dx within three weeks of the flare. I did not have any obvious symptoms prior to that. My major symptoms have not really improved much since then -- spasticity on left side of my body. I have had to use a cane since that attack. So I assume I have permanent damage. I do have some other symptoms that come and go (vertigo, burning on the top of my head and left arm, numbness). So I am not even sure if I am RR.
I assume if you have a symptom that disappears for a long period of time and then reappears, that it is a new relapse. So I think it makes sense that there is new damage in the same area. Maybe? I am confused too