Usually, after receiving RFE, LUD continuesly change 2-3 days maxium, but not 4 days as mine.
Also Ihave a letter from NSC sayingthat my NC is still pending ( the letter was dated after RFE date).
If my NC is still pending, is there any reason to LUD continuesly? Also why need LUD everyday. What they do day by day? Documents go through from an officer to another?