If Cav scouts go thru OSUT training at ft. knox, then why am i going to basic at ft. benning?

I just don't understand because everything i read says all cav scouts go throught basic and ait at ft. benning, but i signed up for 19d, and i'm going to ft. benning for basic. also, does this mean I will immediately go to ft. knox after basic to do my ait?