Since SNQ seats are often branch-specific, changing your branch in the 2nd round can cause the quota not to carry over. Check DSCE’s official counselling guidelines for quota rules. Immediately contact the college admission office and explain your 1st round SNQ allotment. Keep all proofs and allotment letters ready. They may reconsider or guide you on options. If not, you may have to accept the new branch or try for SNQ in future rounds.