Wow! This really weird. I have NO idea what just happened.
As you suggested, with my iPhone 6 in front of me and while reading your reply on my MB Pro, I scrolled to the bottom of Settings > iCloud > and tapped Sign Out and when I saw the alert that said doing so would wipe out, among other things, Apple Pay and the data for the two credit cards I had entered, it made me pause and think about it for several minutes.
The iPhone screen dimmed, then shut off as is normal when it's been sitting with no input and at the same time, on my MB Pro I got a warning I have never seen before in fifteen years of using multiple Mac computers: Your system has run out of application memory. To avoid any problems with your computer, quit any applications you are not using. This on a MB Pro with 8GB of memory and only four or five apps open: Safari, Mail, NetNewsWire, and 1Password.
I launched Activity Monitor and saw that the Memory Pressure reading was almost topped out whereas, normally, it barely shows at the bottom. I quit all running applications and did a restart, following which, for some unexplained reason, I had to sign back into my iCloud account, my Messages account, etc.
When I got back to the desktop on the MB Pro, I went to the iPhone and cancelled signing out from iCloud and, for the heck of it, opened Contacts on the iPhone.
Everything was restored and even the new address I had added last night is also there.
So, through some weird magic I certainly don't pretend to understand, all is back to normal.
Any comments or observations anyone would like to make on this would be very welcome.
Many thanks.
12-19-2014 09:27 PM