Audit Trail Activation on Parent-Child BC

Hi Masters,

   I have a requirment where i need to Activate the Audit Trail which should show some fields from parent BC and Some fields from its Child BC.

Parent BC: Lead(Based on S_Org_ext)

Child BC: Contact

From Parent BC, i need to show Status,

From Child BC, I need t show First Name, Last Name,Email, Phone Number

Process I have followed:

In Admin-Audit Trail,

1. Created an Record(Parent BC Lead) with Association enabled.

2. Added Parent BC Fields.

3. In Child BC Tab, added the link

Lead/Contact to get First Name and Last Name

Lead/Address to get Email ID