eb2降级eb3 job role 变了

LZ eb2 485交表已经超180天。刚刚公司内部换了工作。律师说两个工作间可以portable。
LZ目前想降级到eb3 并用原来的pd（eb3已经current），请问大家可行吗？有什么风险？
公司律师说要问问uscis：他们原话是：
while you are portable, you are no longer going to be filing the position on the labor certification, which may impact our ability to file thr EB3 downgrade. We will be asking USCIS  to extend the flexibility afforded to those who are AC21 portable.
求大牛指点！！

do not understand, I think it is fine to downgrade from EB2 to EB3.

主要是job title 和job description 都变了。虽然aos portable，但是soc code不同。劳工部那里是两种不同的职位