[Manichean]

Originally Posted by jdege

Or, if you could specify a tag that would be added to each book as it was being imported, when you began the import, you could use that tag to select the books you wanted to run the bulk metadata editor on.

See preferences->adding books, there's an option to add a tag when importing books.

Or if the books were tagged with the date and time of their import.

There's a date column (lookup name 'date') and a modified date column(lookup name 'last_modified').