Do we register for NRMP match for IM fellowships?

Sorry for asking here but my program is not offering much guidance. Do we apply for NRMP match for IM? If so how does the timeline work, because on AAMC ERAS it asks for your NRMP ID (and this application is due July 20th) but on NRMP website it says NRMP match does not open until August 24 for medical specialties? (Medicine and Pediatric Specialties)
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Internal Medicine and IM Subspecialties Source Type: forums