Even though the repeated course is essentially "wiped out" by the institution you took it at, it STILL shows on the transcript. For example, I suck at math... I failed college algebra freshman year. Big fat F... Then I re-took it, got an A. Its on my transcript as repeated but its not factored into my GPA. However, AADSAS doesn't give a crap they still see it on the transcript and factor it in. Trust me I wish this wasn't the case because my AADSAS GPA is really going to hurt my chances this cycle.
As far as it showing R? I am not sure, mine doesn't show that, it just gives initial grade and says *repeated* next to it. I would call AADSAS and ask. Easy to get a hold of and everyone I have talked to when I had questions has been very helpful.