Query in creating AET fields

Hi,

We are working on a upgrade project from crm 5.0 to 7.0.

In campaign overview page we need to create an assignment block with few custom fields which we have created using AET. In CRM 5.0 they have implemented a custom transparent table which holds the data for these custom fields.

How can we move the data from the custom table to CRM_MKTPL_ATTR table where the AET attributes are created?

Few programs use the existing custom table. Thus if we change the data in CRM_MKTPL_ATTR it will not be reflected in the custom table. How do we handle this situation?

Regards,

Sayan