Gregory Benson wrote:
Two days ago I have entered a new contact in Address Book on my iMac.
It should sync and move the new contact to iCloud and then move it to my iPhone, iPad, and 3 other computers.
I added another new contact today and it did sync with all of my devices.
How do I force my iMac to sync with iCloud?
Make sure that you put the contacts into the iCloud group, if they are in the On My Mac group they won't appear in iCloud.