Address book- Local contacts not in iCloud

Question

I have an iMac, iPhone and iPad.
The IOS device are set to sync contacts only with iCloud.
Here's my issue; Address book on my iMac has 407 contacts, but there's only 221 on iCloud, and the IOS devices. Address Book has 2 accounts - iCloud, and Local, so it appears that there are some local contacts that aren't being synced.
I can't see any settings that would allow (force) all contacts to sync, it looks like it should just happen that way, so any assistance would be appreciated.
Cheers
Bill

Answer 1

Go to users and groups and choose only your On My Mac Contacts to display.
Ensure that nothing is typed in the search field.
Click to select the first contact and shift-click the last to select them all.
Drag the list of contacts to your desktop.
Delete the contacts from Address Book (using your delete key).
Make sure your iCloud account is your default account (preferences > general).
Select All iCloud contacts from users and groups.
Drag the file you previously dragged to your desktop back onto Address Book.
You might want to back up all your contacts before you begin.
Select All contacts in users and groups
Click to select the first contact and shift-click the last to select them all.
Drag the list of contacts to your desktop.