W-2 - email address not pre-populating

SUGGESTED

When I created my W2s originally, I got to a screen to allow me to email the instructions to my employees for accessing their W2s online.  When I got to that screen, the emails were populated and I noticed several wrong email addresses.  So, I exited out of there and went to my employee records to correct the email addresses.  However, when I went back into the existing W2s (by clicking the eW-2 Password Lookup) and accessed that same screen all of the email addresses were blank.  How do I get that screen to pre-populate the employee email addresses?

Thanks!