Wow,
this clarifies a lot of things
If I understand well, it is possible to sync TO Kobo (via WiFi) highlights & annotations, but ONLY from books bought from the Kobo shop. Since I'm not buying books from the Kobo Shop, the SYNC function is almost useless for me. I guess...
So from what I'm reading now

, the easiest way to have a backup of my annotations, would be to use this setting in
Kobo eReader.conf :
Code:
[FeatureSettings]
ExportHighlightsEnabled=true
With this, I will get a TXT file in the ROOT of my partition on my Kobo.
Is this function going to work with my Kobo Aura?