ka/omicron

I know KA got suspended by their nationals a few years ago and just continued without nationals as just "Omicron". Have they been re-affilated with their nationals? If so how long did it take for them to be re-affilated? Also was there a deal that was made? Im sure nationals was not happy with them parting. Im curious because I'm at another university and in a different fraternity going through issues and we may part ways with nationals.
Thanks