Just want to update my experience for everyone's reference.
My wife already had nexus (under Indian Citizenship, Canadian PR). I applied separately for me (under Indian Citizen, now Canadian) and for my minor daughter (dual citizen).
We (me and my daughter) were conditional approved long back but then it all went on hold. After becoming Canadian Citizen (all of us), I checked and booked an appointment with Detroit Enrollment center. We went for our interview yesterday. My wife only had to update her Canadian Citizenship, Current address and Driving License information.
For me and my daughter, we provided our passports, my Driving license. The person took our records and updated in their systems. The officer took our picture, fingerprint. No questions. We were provided some information about nexus in general. We were told our Nexus will come with Global Entry and TSA Pre-check. and we should receive it in under 30 days.
My wife already had nexus but since her Citizenship was updated (from India to Canada now) , she was asked to "replace" her nexus card online in 1-2 weeks.