My Passport Ultra Will Not Backup Another Passport Ultra

Both passports show up in DW backup. I selected one as backup to and then selected the other one to backup from. Is there something I am missing?

Hello,

Please refer to the following KBA article:
https://support-en.wd.com/app/answers/detail/a_id/3653/

https://support-en.wd.com/app/answers/detail/a_id/12279/