Attitude towards people who do a horizontal transfer

Sorry if this question sounds lame but I will be joining Pilani campus this year. Now suppose I am admitted to some branch in my first year and I get to know people there and socialise but I work hard and manage to get a horizontal transfer to my preffered branch(msc eco in my case), will I be treated as an outsider there because the ones admitted to eco before would have already socialised before and I would be new there. Is this the case or are people welcoming towards ppl who get transferred to their branch?