Earlier quoted context omitted.
> That would be you making it complicated. What are you all doing with your Kindles that needs multiple levels of organization? A Kindle Keyboard 2 is completely different than a Kindle Oasis 3. The file format they use is different (they've changed formats a few times in the last 13 years,) the software is old enough on the Keyboard 2 that it's fundamentally quite different, etc. This doesn't even preclude other e-r…
Formats are a different point from “ebook groups”. To answer your question — I’ll modify the line that calls the conversion program (which is, at the moment, Calibre’s ebook-convert). As you can imagine, I’ve already had to do that a few times over the last 15 years. It took me less time than the “add to library” dances would have. I still don’t understand “keeping track”. So you have several readers, there are books…
The point is that even in the same line of readers, there are subtle differences. Replace "formats" with "ebook groups" if it somehow makes it easier for you to understand that different readers have different ways to do things.
> I still don’t understand “keeping track”. So you have several readers, there are books on them, you read the books. Calibre does not sync notes or reading position anyway (and certainly not wirelessly), as far as I know.
Uh, yes it does: http://www.mobileread.mobi/forums/showthread.php?t=296205
And if you have thousands of books and multiple devices, keeping track of what's on each device and which format is best for the device gets messy. It's not a hard concept to grasp.