Hi,
My Eb3 priority date is Nov 2003 and pending I485. My wife is on H1b and I have not applied for her greencard because I got married after applying for my I485 and the priority dates moved back (this was 2007). My employer has applied and received an approved labor for EB2. I want my employer to go ahead and apply for I-140 and request for priority date porting from EB3 to EB2 also.

What are the exact steps that I or my employer should follow to be safe? How can I avoid my wife getting out of status and get her greencard started in time?

My employer says that they have to get approval for EB3 to EB2 priority date porting before they can apply for my wife's I485. I was suggested by another person in same position as me to send both at same time.
Thk you,
Srinivas