With how much information learned in the ALF AIT is also applicable to the NHF AIT, it would be extremely helpful to candidates who are looking to expand their capabilities to not be required to repeat the same information twice.  I think by getting credit it respects the AIT and the work they are putting in, rather than just making them jump through more hoops.  The credit also gives them more time to focus on where the information differs rather than having to give time and energy repeating the same materials.