[bmeddings]

I have been using Calibre for several years.
Over those years I have backed up my Calibre Library.
My backup software and/or procedures have changed over those years.
So I now have a few copies of "Calibre Library" spread over multiple drives.

Is there any way to synchronize two somewhat different libraries ?
For instance, two of my libraries differ by a few hundred books as shown by the book count in Calibre.

I would be most grateful for any help or suggestions.

Baffled Basil