[chaley]

Originally Posted by BetterRed

The book/data folders don't seem to be copied at all, even they only contain one file.

I only tried copy, not copy and delete, I copied to an empty library, with and without custom columns.

BR

@kovid: I can replicate this problem. It seems to be caused by this in db.copy_to_library
line 108 is

                nbp = newdb.field_for('path', book_id)

but should be

                nbp = newdb.field_for('path', new_book_id)

I didn't push the change because I am not confident enough that I understand all the ramifications. However, with the change, "Copy to library" does copy the data files.