Why does my address book not sync to iCloud?

Question

Why does my address book not sync to iCloud?

Answer 1

I believe the duplicate address book accounts stems from the move from MobileMe to iCloud and both accounts still being active.
This is how I merged the two address books:
1) To make sure all the contacts are in both:
a) I selected On My Mac account - clicked on any address - Command A to select all - drag the contacts to the iCloud account - answered OK to merge and resolve duplicates.
b) same in reverse: select the iCloud account - click on an address - click Command A to select all - drag the contacts to the On My Mac account - answer OK to merge and resolve duplicates.
In system preferences I found an iCloud icon and also a MobileMe icon. I was logged in under both.
1)  In the Address Book preferences I selected iCloud and unchecked Enable this account.
2)  In the Address Book I selected iCloud and clicked on the minus “-” to remove that account – leaving only the local Mac address book.
3)  I went into system preferences and logged out of MobileMe
4)  In system preferences I opened iCloud and the “Contacts” was not selected (from above) and I selected it.
I got a dialog box asking if I wanted to merge the iCloud contact with the local contacts – clicked YES.
… spinning wheel for a minute … voila – only one address book account – iCloud with syncing to iCloud and my iPhone.