I had given our recent story with this process in a previous thread. In short, my son had two "yes" answers on his initial questionnaire. Because one was for a concussion and I had heard almost certainly they would want supporting documentation for that issue my DS brought it with him to the exam. The doctor took the info. However, the documentation never did "make it" to DodMerb anyway. So he was given the "remedial" requesting all the same documentation we had already provided to the doctor and Concorde. So we had to resend to them anyway. Also, even if the documentation had been successfully delivered to DodMerb, I do believe they still may have given him a remedial for a small and easy supplemental questionnaire that DodMerb sometimes requires (which they also asked my DS to complete along with the documentation). So...it all ended up not mattering either way.
But I also agree with the previous posts about not giving information if not asked. That was also our logic with my DS's other "yes". It was a groin injury. In that case, since we felt less certain it would be "tagged" for supporting documentation, we did NOT provide it. Sure enough, we still got a "remedial" for that "yes" too, but it was another simple questionnaire. So again, we had made the right decision to not "fan that fire".
In the end, because we had all documentation ready-to-go for both "yes" answers and we responded to their remedial requests immediately, my DS was qualified days later. In all likelihood, unless your DS or DD can answer "no" to every single question on that initial questionnaire you may just want to take the tactic of assuming a remedial is in their future and roll with it. Whether you bring supporting documentation or not to the initial exams, assume it will be asked for and have it ready to go. If they never ask for it, then fine. If they do, then that's fine too as long as you have it ready to scan and email to them asap.