Georgia Authority Question

ive been hauling exempt products with just a dot number for several years as interstate carrier. Ive never gotten the federal mc authority because i only pulled logs and hay in ga and fl. Now i only run ga and have decided not to go in fl. I use the ga tag now not irp tag. I want to haul other types of freight in ga only and i know you use to be able to get a ga intrastate authority but now im told just register with gimc but thats just ga registration like the ucr. That isnt ga hauling authority. Or is it. I know i have to register with gimc to haul in ga only so where do i get the ga authority to haul regular freight?