问一个关于COS还是CP和CAP GAP关系的问题

楼主今年三抽，OPT Extension 6月中expire。今天猛然发现公司给我填的I-129上选的是CP不是COS，我不是很明白这会造成什么影响。如果是CP的话抽中还会有CAP GAP自动延长到9月30吗，还是6月OPT过期之后必须出境然后去使馆面签等到10.1再回来？已经向公司argue改成COS了，我的理解是只要选的COS抽中一定会有CAP GAP延长到9.30，如果10.1之前approve之后立马身份生效不用出境，不知道理解是否正确？希望明白人讲解一下。

补充内容 (2019-3-2 10:02):
刚上USCIS网站查了一下，我的理解是选择了CP就没有CAP GAP Extension了，意味这哪怕抽中了OPT过了Grace Period也必须出境等到10.1去使馆签证回来。。。
H-1B petitions that are timely filed for an eligible F-1 student that request a change of status to H-1B on October 1 qualify for a cap-gap extension.

Timely filed means that the H-1B petition (indicating change of status rather than consular processing) was filed during the H-1B acceptance period which begins April 1 while the student's authorized F-1 duration of status (D/S) admission was still in effect (including any period of time during the academic course of study, any authorized periods of post-completion Optional Practical Training (OPT), and the 60-day departure preparation period commonly known as the "grace period").

https://www.1point3acres.com/bbs/forum.php?mod=viewthread&tid=488411&extra=page%3D7&mobile=2

看看这个帖子

是的，只有change of status才有CAP GAP~~如果选择了CP，那么楼主OPT过期之后就要离境，等到批准之后才能去面签回来~~