ExFAT does not support Extended Attributes:
https://docs.microsoft.com/en-us/window ... comparison
Sorry, but you're out of luck there. FileBot wasn't able to write xattr metadata the first time around, and so now the duplicates script doesn't have any Movie / Episode IDs by which it could find logical duplicates. If you really want xattr metadata, then you need to either use NTFS, or configure FileBot to store metadata into plain files instead of NTFS Alternative Streams. Either way, you'll have to process all files again.

Using ExFAT for data storage for Windows-only is generally a bad idea (unless it's just a small USB drive that primarily needs to work on both Windows and macOS where data loss isn't a concern). NTFS is much better in every way, except ExFAT is much more simple, making it better for read+write interoperability with non-Windows platforms.