You don't; CB doesn't use Joomlas profile. We also have no migration tool or anything of the sort to move the data to CB. You could try using CB Auto Actions with a query action after login or something to move the data over if needed, but maybe easier to just move it manually with database queries or user edits if the amount of users isn't too large as it's a 1 time move as they won't be using Joomlas profile.
Kyle (Krileon) Community Builder Team Member Before posting on forums:
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