These are exactly the procedures I followed. It works great except if you have over 10k emails in your original cox account, not all transfer to Apple Mail on new email. Similarly, with iPhone except limited to 3k there.
When I spoke with Yahoo support they said it was an Apple issue and not their problem. That is why I say the testing done between Cox and Yahoo was inadequate. They obviously did not test large accounts with Apple products.
KarenL, I do not believe Cox or Yahoo tested anything at all before rolling out this horrendous transition to Yahoo mail.
If any testing was done, it was marginal.
