I got some questions:
1. Before H1B1petition for me by my employer is approved, whether my trip to China will incur the petition abandoned?
2. Whether I can return with approved AP if the H1B1 is pending?
3. When the H1B1 is approved, should I go outside of US to get visa stamp?
4. Whether the approval of H1B1 cause I-485 invalid?
Thanks in advance.