SRM Roles and Authorization

We have a supplier portal we've set up with the SRM business package and are wanting to delegate some of the roles that comes with it. For instance we want to copy the Purchaser Administrator role and remove some of the iviews and assign this to people, but we also want to have the original Purchaser Administrator role to assign to the admins.

When I copy the role to a new directory and remove the iviews we don't want to include, I get a message of "You are not authorized to execute this application" when trying to access the iviews through the navigation. This of course does not happen when assigned the original role. The original role does not have an assigned actions to it, are there some other authorizations is has that I need to apply to the new delegated role? Or is this not possible to do?

-Chris Bahr