Hi
I gave up on that a long time ago.
Never figured it out. Could be related to K3 firmware, Calibre versions, but ..
Instead I created a Custom column i Calibre, shown in library view, and then use the K Collections plugin to import Collection info into that column.
This is good enough for me, since all my eBooks on my K3 are also in Calibre library.
You can read more about that here:
https://www.mobileread.com/forums/sho...99&postcount=1
It's hidden and not as easy to find as it used to be, but...
In the section "Create Collections on your Kindle automatically using Calibre data" click the Show button, subsection "Import Collections to Calibre from your Kindle", click the show button, and just follow the instructions.
Hope this helps you.
If you figure out how to also get this Collection info into the Calibre Device view, PLEASE let us all know how to do it.
Cheers, Per