Yes, I know that, but 20 resulting out of two documents? And funny: now I synced the iPhone and there only 15 files had to be updated. Well, certainly it is something very complicated and I’m glad Scrivener does it for me.
Note that Scrivener ‘walks’ through the project looking for changes, so the number of files listed will closely track the number of files in the project. But only files that have actually changed will be transferred.
Remember that Keynote is an Apple product. As such, it may have access to software tools that are not available to the unwashed masses.