For a long time, my Libra 2 was happily transferring Collections information (in a custom column in Calibre) to my Libra 2. For some reason, all of the Collections information has disappeared on the device for side-loaded books - it's only there for purchased books. I haven't changed any of the settings (or, rather, I hadn't when this happened), so it's a bit of a head-scratcher.
I should maybe mention that I have a second Libra 2 (long story), and I'm transferring fiction onto that one, so that the original one will just be nonfiction (I haven't deleted anything yet from the original, nonfiction device - only uploaded a portion of the fiction to the second device. It's a work in progress). I don't know whether this might have caused the issue - I can't think why it would, since, as far as I know, all of the settings are in Calibre, which is "in charge", and apply the same to the two devices. The only difference between them from Calibre's point of view, presumably(?), is that the books on the two devices are different.
I have referred back here
https://wiki.mobileread.com/wiki/Kob...nd_Collections, but the only thing I notice where my settings are maybe not in line with the instructions is that I have no "#myshelves" category - my custom column is simply called "Collections". Perhaps there's a problem with that? But it's been that way for many months, and was working fine.
If anyone could give me any pointers, I'd be very grateful.