Can I maintain old priority date

[hima101]

EAD under H1-B based Green card was approved from last employer which was valid till 2008 but 485 was denied/revoked because I left the company and moved back to home country.  I re-entered to USA in 2018 with new employer in H1-B, now I would like to file Green card and maintain the old priority date. Job profile for both the company is same. 

Question: 
1. Do I have any option to maintain the old priority date, then how? Is it a risk? 

[pontevecchio]

You should be able to retain the PD. The lawyer will claim the PD when your previous dates are current while filing AOS or at least that was how I recall it worked. What risk?