回复：AR11 Confirmation

1. file ar11会收到receipt吗?

-When you file it online, your can print out the confirmation receipt immediately. If you file it by mail, you will not receive any confirmation from USCIS about your AR-11 filing. But you may mail it using registered mail in order to have a proof of delivery (request confirmation of the receiver's signature).

2. 有没有地方去查uscis现在记录的当前地址呢?

-No. You can call USCIS to verify whether your address is updated.