bostonbuddy
Registered Users (C)
As Dept. of State assigns visa number based on PD, State dept's guidance may be the right one:
http://www.foia.state.gov/masterdocs/09FAM/0942053N.PDF
9 FAM 42.53 N3.7 Substituting Alien Beneficiary
(TL:VISA-284; 05-17-2001)
Once a labor certification has been approved, an employer may substi-tute another employee. Although the certification remains valid, the substi-tuted employee does not retain the original priority date, but rather is as-signed a priority date as of the date the employer requested the substitu-tion.
http://www.foia.state.gov/masterdocs/09FAM/0942053N.PDF
9 FAM 42.53 N3.7 Substituting Alien Beneficiary
(TL:VISA-284; 05-17-2001)
Once a labor certification has been approved, an employer may substi-tute another employee. Although the certification remains valid, the substi-tuted employee does not retain the original priority date, but rather is as-signed a priority date as of the date the employer requested the substitu-tion.