Not able to migrate Squirrelmail address book to Roundcube

[glraj]

Hello,
We are planning to migrate our webmail from Squirrelmail to Roundcube.
We want to migrate Squirrelmail users personnal address book which is stored in MYSQL database to Roundcube.
We have enabled Squirrelmail user copy plugin and did necessary config changes & given necessary permissions to access Squirrelmail mysql database from roundcube server.
When the new user is logging IN first time in roundcube , the address book is not getting migrated  in to the roundcube.
We are not seeing any errors in the roundcube log files.
We are able to connect the squirrelmail mysql server from roundcube server.

KIndly suggest how to trouble shoot this issue.

Thanks in advance

Regards,
Rajesh G L
[email protected]