Package: ftp.debian.org `dak admin suite add` understands less options than `dak admin suite-config set`, in particular it missed `notautomatic` and `butautomaticupgrades` which resulted in backports suites getting configured without those during the buster release.
`suite add` should understand the same set of options as `suite-config set` or at least give an error when unknown options are used. Ansgar