Just to add to George's helpful comments, you should only attach forms that are specifically identified and can be selected from the dropdown for Link to forms.  F.8865 happens to be one of those.  Other forms that are not available from the dropdown should never be attached because those will not be processed by the IRS.

By now, you should have found out the 3 forms that you mentioned, F.8865 is the only one that cannot be prepared with ProConnect Tax.