Two Yahoo Email accounts deadlocked


New Email
I have a problem which is admittedly of my own making. I have two yahoo email addresses lets call them A and B. I used A as a backup email to restore B and vice-versa (I intended to fix this but didn't get round to it). Now I find myself locked out of both accounts. Because email address A is asking to send a security code to B and email address B is asking for a security code from A. This has arisen I think, because I have moved.