Hi @kiru4a
Thanks for the info. These tables were used back in version 2 of ACF. Now that we are in v4 and nearly v5, a lot has changed.
To migrate successfully from v2, you need to first upgrade to v3.0.0, then 3.5.8, then the latest v4.
This will ensure all the correct migration scripts are run.
Please attempt this by downloading the version from here:
http://wordpress.org/plugins/advanced-custom-fields/developers/
Thanks
E