[anthony.burton4]

I have books with a Series, Series Index and Title in calibre.
I'd like the Series and Index to be included in the title sent to my reading device which is a kindle.

I have a metadata plugboard set up to use:
any format, any device: {series}{series_index:0>2s| | - }{title}
as the title.

This works fine for nearly all my books - but a handful of David Eddings titles are showing only the Title in the kindle.
e.g. "Belgariad 01 - Pawn of Prophecy" just shows up as "Pawn of Prophecy"
When I use Kindle Collections to run a report on books present on the device - all books are correctly reported.
I've tried deleting the books from the device, rebooting the device and then readding them - to no avail.

If I delete and readd two books: one book that does not currently appear correctly and one that does - then both books end up back on the device looking exactly as they did - i.e. the correct one stays correct and the incorrect one is not fixed.

I'm at a loss to understand how this has happened - or how to fix it. From a kindle reset to factory default, all these books were added at the same time so they should have the same behaviour...
Has anyone got any suggestions/ideas?

Thanks