My DS also has waiver requests and nothing is reflected in DoDMERB. He received an AMI directly from USMA which requested specific documentation. USMA requested that documentation be sent directly to their processing. No communication from the other academies in terms of waiver requests. He then sent the same documentation directly to DoDMERB. The DoDMERB contact acknowledge receipt and indicated they would upload to his account. However, nothing in DoDMERB indicates those documents were uploaded. Based on communication with the DoDMERB contact, they indicated that nothing would change in his portal until an academy took action on the waiver or requested further documentation. The process is unfortunately incredibly opaque. I don't know if others have had a different experience.
My understanding is that assuming the documents my DS sent are in the system, all the academies have access to that info. Maybe (just guessing but have no idea) is that other academies do not then need to generate an additional AMI unless they need different/new information.
I do not know how to tell if the academies are doing anything actively with a waiver request.