1. Resubmit new valid information, and
2. E-mail to dec(at)mmf.nsu.ru for the administrator look at your records and delete incorrect (previously submitted) ones. You may simply write: 'Delete all my previous records, please'.
I remind, that there can be two records for those graduates who finished MMD as bachelor (4 years of training) and as master (+ 2 years) in different groups, if they this want.
Registration in DB.