USMC72,
I think I understand your question, but if I'm off base, please feel free to correct me. It sounds like your son/daughter had a disqualification for something, was then granted a waiver buy the waiver authorities (DoDMERB does not issue waivers), but there was additional remedial information that DoDMERB needs to clear up before his/her medical can be closed.
This usually occurs when a disqualification is found on the initial medical examination. Once a disqualification is added, DoDMERB will not request any additional information unless the wavier authority requests it, or a wavier is granted.
Please let me know if I missed the mark on this one.