No information was migrated from askbot—mainly because there is no straightforward way to do so. Discourse has it’s own trust and reward system. You can read about it in the summary posts in the #start-here category.
Notifications from askbot? I don’t see how they can be moved to a different platform. Sorry. Again, nothing was migrated. (We moved to a new platform, we didn’t migrate.) Please have a look at this post where a few of this things have been discussed already: Hello everyone! What do you think?
The Discourse trust system, along with other moderation features take care of this. Each language has been initialised with a moderator and a leader (trust level 4) to oversee things and step in when required.
Then I don’t think you’ve spent enough time on Discourse just yet