都被扫描，也偶尔会被问住在哪里。我都说是加拿大这边城市。这样收到收据后搬回加拿大住不会影响绿卡审批吧？
-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，虽说护照每天扫描，但也没有新盖入境章。那我填写I-485申请表时最后入境那天日期是填写I-94卡发卡日期呢
-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.
还是我将来搬回美国的那天呢？我搬回美国时也不会有新的I--94卡，或者新的入境章，只会是和现在一样护照扫描一下。
