Just some notes:

- we'll create migration script from Dolphin to UNA soon (maybe a month or so)

- Dolphin connect module is coming with the next update which allows to login to UNA with Dolphin credentials

As for you question:

you need to create profiles in both sys_accounts and bx_persons_data tables, as well an association need to be added for both tables in sys_profiles table. The structure is described here:

https://github.com/unaio/una/wiki/User-Profiles