If you already have a Chaos account that is using the same email as your AXYZ account, both accounts will be merged automatically, and you will be asked to provide a new password (see sample video).
You won’t need to use the new credentials in anima® immediately. However, remember to use the new credentials the next time you sign into anima®.
Also, you will be able to use the same Chaos credentials regardless of the product licenses you have with Chaos.