opt extension pending期间换工作

有可能要在opt extension pending期间换工作。看了不少帖子说这期间换工作是合法的，只要提供过期的ead以及新的i20. 下面是uscis的解释：

The following documents establish the student’s identity and employment authorization for Form I-9 purposes:

Unexpired EAD (List A), or
Expired EAD presented with Form I-20 endorsed by the student’s Designated School Official (DSO)(List A). Note: this is acceptable for 180 days from the expiration date on the card and work authorization must be reverified after 180 days for employment to continue.
If the student presents an expired EAD and an endorsed Form I-20 as described above, the employer should enter the following information under List A in Section 2 of Form I-9:

The EAD document title
The EAD document number
The date the EAD expired in the expiration date space, and
“180-day Ext.”

但是为了避免不必要的麻烦，还是想问一句那我一定要上报学校换工作的事情吗？还是说新公司录入我的i9信息之后uscis就会收到我换工作的消息，就会要求我补充新的材料，所以上报新工作是不可避免的？

最近感觉查的越来越严了，所以还是想问问清楚，尽可能保证不出问题。谢谢大家了。