回复：请问8老师，在I-140已被批准，I-485还未提交的情况下换雇主，有些什么风险需要注意？谢谢！

The I-140 is void unless your current employer will hire you back.  Your new employer has to do it all over again, but you can use the current I-140 priority date as the future new I-140 priority date.