Seriously, I do not believe for a second that the society or the local congregation destroyed all records of mine even tho I requested that in a letter. I believe that you exist on a data base at headquarters as well as your last congregation.
There has to be a way to track you. If say you appeared at a congregation in BFE years after you left the home town cong. Suppose you were trying to pull a fast one and get baptized all over again and start fresh even tho you were DF'd in the home town. The elders in BFE may suspect something. They must be able to call HQ and confirm your newbie status.
Loris