Related Items

I am using SP 2010 Foundation.  I have a Client List and a Client Detail List.  Client Detail List uses a lookup of Client Name from Client List.  I create the Related Items portion in the Client form to show the Detail for the Client.  The view appears to configure correctly in the Parent (Client) form, but when I open the Client Form, only the Attachment and Title appear with no filtering.  I have tried this on several different test lists with the same results.  Can you help?  Thanks.