[gianni_1]

Hi,
maybe this is a tread already discussed, but I've not found it.
The problem is that, when I select several books and I try to modify the Group metadata assigning to all books the same series, Calibre assign to all also the same serial number (1).
In the Tweaks section I tried "first free" and "next free", but the result is the same.
There is a way to force Calibre to assign to each book a progressive number, even using any "empty" number, i.e. not yet assigned or from a removed book?
I know that by assigning a number to a book at a time works well, but when you have to work on a large number of books is a little exhausting.
Many thanks.
Best regards,
Gianni
P.s. I work with latest Calibre 64bit version and Windows 10