I just ran again into an issue that I have experienced several times before: While flying across 9 timezones, I highlighted passages in a book on my iPhone. Once I arrived at my destination, I used Logos on my MacBook. I don't remember which device (iPhone or MacBook) was first connected to the Internet. However, all the highlighting during the flight is now lost.
I have experienced this numerous times before. But it only seems to occur if I fly across timezones.
This is really annoying as it takes away the whole purpose of reading while traveling.