回複：分享：等了8年,今天綠卡到手，一波多折

you had an approved I-140 which is the reason you could get H1 beyond 6 years.

When you got hire back by the I-140 sponsor, you were able to file I-485 again.  you would not be able to file I-485 again without the employment letter from I-140 sponsoring company.