Calibre import using
Filename for Metadata only works at the the file level.
If the book has embedded metadata, it is best to use that instead.
Preferences: Adding Books: Read metadata from contents tick
If that is not doable.
Getting this Plugin (and setting it up BEFORE you add)
https://www.mobileread.com/forums/sh...d.php?t=278559 might help sort the strays
Oh
And the Quality Check PI has tools to flip names, format Initials consistently on SELECTED titles. All these should reduce the amount of individual massaging the data