OK, I’m all caught up and IMO my reply still stands. If you were able to clear World Stone Keep or Baal runs in the “original” D2 then you ARE entitled to be able do it in D2R, as their advertising says D2R is a remastered D2 that will provide the original D2 experience. We should be able to do everything in D2R, we were able to do in D2. The only differences should be improvements. If we are not entitled to the experience, we are entitled to complain about not getting the experience we were told we were getting. lol. Wow that was a toungue twister. 
Hopefully this is all temporary and will go away with the “BIG FIX”, but who knows.