Hi there Katy!
How exciting to be visiting the Walt Disney World Resort in October!
Boma - Flavors of Africa is still a Table-Service restaurant at Disney's Animal Kingdom Lodge. I wasn't sure if the misunderstanding is that the restaurant is not located at Disney's Animal Kingdom Park, but rather inside Disney's Animal Kingdom Lodge.
Follow the link I have provided and you will find that Boma - Flavors of Africa is still listed as a participating Table-Service location on the
2016 Disney Dining Plan. I looked online and they are currently accepting Advanced Dining Reservations for the month of October at the popular dining location, so your reservation should be honored as well. I would suggest calling Disney Dining at (407) WDW-DINE or (407) 939-3463 and have a friendly reservation agent pull up your Advanced Dining Reservation in order to confirm your reservation.
I hope this information is helpful and answers your questions. If not, please don't hesitate to write me back with any additional questions that you may have. Best wishes for a magical trip, Katy!
Bon Appétit,
Jodie