回复：我的485批准5个月后, 今天移民局又给我发来了一奇怪的通知

Ignore that notice. UCSIC made a mess. My wife received 4 "Welcome notices" within 4 days in a row. Each notice was sent out on different date. However, she did not receive I-485 approval notice. She received her GC without stamping her passport.

If you receievd your 2nd green card, please post your experience.