I recently changed the email address that AGR has for me. This went relatively smoothly, although the login connection between amtrak.com and amtrakguestrewards.com had to be re-established.
But when I logged in to my account after the email change went through, all of my e-vouchers had disappeared! It turns out that these vouchers are associated with email addresses, not AGR numbers. I called AGR, and the best they could do was to email me the voucher info to my old email address (which luckily I still had access to). They said I should be able to use the vouchers by entering the numbers manually on the reservation payment screen. And the agent was able to see them, so I could probably make a reservation that way.
But the bottom line is: if you ever need to change the email address on AGR, make sure that you have copies of any open vouchers. You'll need them.
But when I logged in to my account after the email change went through, all of my e-vouchers had disappeared! It turns out that these vouchers are associated with email addresses, not AGR numbers. I called AGR, and the best they could do was to email me the voucher info to my old email address (which luckily I still had access to). They said I should be able to use the vouchers by entering the numbers manually on the reservation payment screen. And the agent was able to see them, so I could probably make a reservation that way.
But the bottom line is: if you ever need to change the email address on AGR, make sure that you have copies of any open vouchers. You'll need them.