I can tell you that NY state never forgets a pistol. I got a NY pistol permit in 75, (at age 18) and it had my Dad's pistols listed on it (for protection of the pistols, as well as my use of them).
I moved out of NY in 79. in 2002, NY sent me a letter, informing me that, since I was no longer a NY resident, my permit was now invalid, and THEY WANTED IT BACK!!! (a wallet sized, NON-Laminated piece of paper issued in 1975, and they wanted it back!!!!)
They also wanted to know where the pistols listed on the permit were....
I was tempted to tell them to go pound sand, but opted for thunderous silence, instead. Never heard another word from them about it...