tried last year. go back twice during transferring and extending H-1, using AP at first time, H-1 visa at second time because old AP expired and new haven't got new AP. Both worked and got the H-1 extension.
2. 這樣回去, 對於我的485申請, 有沒有不利的影響??
No. because you use AP, it shouldn't affect your 485 anyway.