This has been discussed so many times. You are AOS status after using AP, but you can still extend or transfer H1b to go back to H1b status. This is the exception for H1b holders who are in AOS status. And it is also why INS/USCIS issued the memo for this.
回複:一個有趣的問題是:用AP入境是否仍維持H身份
所有跟帖:
• INS/USCIS memo :用AP入境是否仍維持H身份 -js366- ♀ (119 bytes) () 11/28/2006 postreply 09:57:34