回复：多谢啊！有没有DHS条文的？

I didn't find a code for it. But logically it should be this way since both H1 and H4 can exist with AOS in parellel. Even if your 485 is rejected, you can still stay in US with your valid H1 and H4 visa - that is why it's advised to keep our H status even a 485 applicant has EAD. A rejection of 485 app doen't avoid your H4 then neither does a rejection of H1B app.