Material Change

[sks]

Hi,

I got offer for "Manager - Production Support" from my current company where I work as Tech Lead. I know there are issues with job code. I ran this through my attorney and this is her response:

"This would be considered a "material change" in your job for
immigration purposes. You can only make such changes after your green
card application has been pending for 180 days."

Is above correct? Has anybody accepted managerial position while I-485 is pending? Please advice.

Thanks.

SK