Kindle 11 not saving templates

Hi everyone, I always use calibre to organize my library.
I had to buy a new Kindle (11th generation) because the old one died.
I have always used this template:

{author_sort} - {series}{series_index:| - | - }{title}

With my old Kindle everything worked fine. What I saw was (example) J. K. Rowling - Harry Potter - 1 - Harry Potter and the philosophy stone.

With my new Kindle i'm not able to make it to save the books in the same order.
It just gives me: J. K. Rowling - Harry Potter and the philosophy stone

Can someone help me please?

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