Since SAB is reporting different paths you need to add a remote path mapping to reverse the container symlinks, you can add those on the download clients settings page.
Host - the hostname/IP you used for SAB (in Sonarr’s config)
Local - the container volume
Remove - the Host path (from the container symlinks screenshot)
I gave a pretty thorough answer to this question here:
No, only if you need to import something that Sonarr wasn’t able to handle (by renaming it) or via torrents/an external drive (or something like that).