My I-751 took a long time to get approved. While the case was still pending, I called NSC and they submitted an inquiry. They selected as the topic of the inquiry "Non-Delivery of Permanent Resident Card" for some reason -- they said that was the only option available to them. This was on Nov 5, 2007.

On Nov 15, my case was approved and card production ordered. I received the card a week later, end of story, right?

Well, today (Dec 7)I received a response to that original inquiry I made. It said that since my card has been lost, I have to submit I-90. They obviously didn't look at the date of the inquiry and put 2 and 2 together that my case was approved and card sent after I sent my inquiry.

My question is this -- I want to just ignore this notice, since I have my 10-year card now and everything is good. However, I just wanted to know if they somehow cancel the card they sent out in their system when they send out a notice like this? Or am I safe to just ignore the notice and use my 10-year card happily...

Thanks for the advice!

To play it safe, send back a copy of the letter you received from them along with a letter from yourself saying that you did finally receive your 10 year card so you will not be filing for its replacement and there is no further action required. I don't think they would cancel the card, but you never know. This at least shows that you received your card.

If the local office ain't too far away or too inconvenient to get to, I'd probably make an appointment and pop in personally. Maybe it's just me but other than filing an application package, written communication with USCIS and their handling of it is not something I have great confidence in.