After my case was approved by the adjudicator she placed I-551 stamp on my PP as an evidence of my newly acquired LPR status.I was suprised to see that the stamp will expire in just 2 months.My lawyer told me that if they approve my case on the spot I will receive stamp with expiration date 1 year from the interview date.Does anybody knows if there is a new policy in place according to which the officers can put stamps on the passports of approved applicants but the expiration date of the stamp must be no more than 3 months from the date of the interview?Thank you in advance for all your responses.