Workbook and Roles

Hi Experts

Scenario: We created a role(Z_role) and assigned to one user in dev server and transported into prod..Its working fine.

The user created few of his own workbooks in Production server.

Now if i create few workbooks in development server and assign them to that role(Z_role) and transport it to the production, what will happen to the work book that a user created in Production server.

1. After successfully importing the request in target server, Workbooks that are created in prod server will be deleted? or ......

I read about RSWB_ROLES_REORG..but i am not clear with that.

2. Is there any other way delete the workbook other then using function module?

thanks in advance

REgars

Annie