Do you mean the CBP officer can update your NEXUS profile with the new I-94? (no need to go to an enrollment center to update?)
thanks.
I thought so and the CBP officer told me so. But either they made a mistake or its not possible, because when I entered next time using Nexus, it gave me B2 instead of H1B. It was an easy fix though, I just emailed the SFO CBP with my scan of i797 and they fixed it in a day. The hard part is finding the email id of your port of entry. Worst case, you have to visit nearest CBP office.