Updating fields after login new field cb_connect

Question: When I add a new field to a user-profile, using cb-connect, is it automatic updated when user logging-in again?

Example Situation:

For example, I add a new field in my profile. "cb_birthday" and fieldname "Brithday"= a required field.
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I will connect my Facebook data to Brithday with cb_connect and all Facebook-fields need to to be accept.

So when the user is logging in, this field is updated.

So far its not working ....

Is there a way to do this ?

Field mapping only works on first time registration. It directly tells you this. It is even directly under the Registration tab. It does not map on login.