No more files being deleted:
I spent hours Friday, Saturday and Sunday on the phone with Apple, regarding my issue where my files kept being deleted. I would use PAGES and NUMBERS and see my files on my IPHONE and in IWORK, then come back open either app and see all my files DISAPPEAR, this happened over and over. After talking to numerous reps I was transferred to one who was going to restore my phone since previous people were convinced there was a problem with my operating system, he disagreed, after looking he said I had two accounts.
This had to do with me having two different apple ids, one which I had for years and a newer one I had to about a year since I no longer had access to the old email address.
He had me go to: appleid.apple.com/
Clicked manage your account and login in with my old apple id and password, we then went under where it said ALTERNATE EMAIL address which was the email address to my newer apple id and deleted it. Then logged out.
Went to IPHONE, Settings, ICLOUD, deleted ICLOUD from PHONE.
BACK to Settings, ICLOUD and entered new password to my newer apple id.
Went to SETTINGS, then to PAGES and made sure Use ICLOUD was set to ON and not OFF. Then did the same for numbers.
Then put documents in pages and numbers, restarted phone multiple times, updated docs and they stayed there.
I am CONVINCED the problem was with the mutiple accounts...
HOPE THIS HELPS!!!!