They seal the envelope, but they put the name of the person and the names of the members of the committee on the outside of the envelope.
In the event that it is a while before reinstatement takes place, which it usually is, they try to regroup the original committee for the new hearing, but usually one or all is gone. In any case, since memories are frail, the new committee opens the envelope and reads the notes that were taken at the initial meeting.
This puts the new group in a better position to deal with 'specifics' again.
Thats about it.
That is one of the reasons why the "priest penitent" privilege for the witnesses has NOT been holding up in court. It is not confidential.
Any goofus with a key can open the cong. file and then open any sealed envelope at any time.
Most of the time sexually driven elders when given a key to the box will make it their aim to review all the letters that they can 'for their own purposes'.
Brant