In an unedited version of the movie, there was a sequence that Naina(Preity) goes to a community centre for senior citizens where both men and women from India and Pakistan come.
Similarly, in the same centre, Aman (Shah Rukh) decides to read Rohit’s (Saif) diary to them, which was originally empty, but Aman made some things up, revealing his true feelings for Naina. When he finished reading, not one dry eye in the audience was seen. The scene later was refurbished and used in the original version. You can watch bits and pieces of the scenes here.
Coming back to RARKPK, Karan, in an interview with a leading entertainment portal recently revealed that he conducted multiple research screenings of the movie. He further added that he showed the movie to around 500 people before it released and made changes accordingly. Not only that, Nitin Baid, who he said is a genius editor, sat over the editing process for over six months, trying to make it crisper and tighter. Karan also added that they went through that beat since it was a tough film with many interpersonal relationships and individual tracks.