Old email address won’t go away

I was recently going to add a gift card to my Xbox account when I noticed it mentioned my old email address. It stated it was going to add the card to that address, but I already removed that email address from my account a year or more ago and now have
another one in it’s stead. What do I do? Will this affect my purchase because my account is no longer connected to the old email, or will it affect nothing and I’ll just have to be annoyed with seeing my old email?

:)