您的回复太及时了 多谢！ 我只是觉得有点confused，当时我filed是I-485，按道理讲一旦收到绿卡，那个case就已经close了。I-751是一个新的case，为什么USCIS会把这两个cases联系起来呢？ 我当时也想打电话confirm，可是认为I-485的case已经不属于pending case了。您能解释一下吗？
-Beacuse your green card is conditional, they may not consider your case be closed yet and they just remember you to file I-751. Not hurt you to calll them. Then, just use your new address to your I-751 filing and that will be fine.
