都被掃描，也偶爾會被問住在哪裏。我都說是加拿大這邊城市。這樣收到收據後搬回加拿大住不會影響綠卡審批吧？
-You can not leave US after filing I-485 until at least 10 or more days later from the date you mail the I-485 using Overnight Express mail (wait for USCIS to put your I-485 into their system). Otherwise, your I-485 will be void if you leave US before USCIS put your I-485 information into the system.
For 100% safety, you had better not leave US until getting the I-485 filing receipt.
另外，雖說護照每天掃描，但也沒有新蓋入境章。那我填寫I-485申請表時最後入境那天日期是填寫I-94卡發卡日期呢
-It is the latest entry date you enter US before filing I-485. The CBP system has your entry/departure record every day/time you enter US even if there is not entry stamp on your passport.
還是我將來搬回美國的那天呢？我搬回美國時也不會有新的I--94卡，或者新的入境章，隻會是和現在一樣護照掃描一下。
