CAS username field value to be manually added to the existing user on import?
I find out the solution for the CAS_username import in CSV method. The method of db_insert in (authmap) table, which dynamically insert the CAS_username in respective field.

The authmap table is present in external authentication module.

    db_insert('authmap')
    -&gt;fields(array(
     'uid' =&gt; $uid,
     'provider' =&gt; 'cas',
     'authname' =&gt; $row[0],
     'data' =&gt; 'N;',
     ))
    -&gt;execute();


So this is the method, i dynamically update the CAS_username using CSV. If any suggestions or update in that. Kindly Prescribe it.