I have two accounts on my MAcbook Pro. One for work and one for home. I recently wanted to share a Keynote presentation between both accounts and the iPad. I logged both accounts into iCloud using the same iCloud account as well as the iPad.
But each account sees a different set of files. I don't understand why as they are both logged into the same iCloud account. I've also tried logging in via Safari and checked with Numbers and Pages as well. In all cases I could not get all files available to the applications.