If you remove the Tenant(project) that Foreman is connected to on the Openstack end, you cannot update the Foreman side - clicking Load Tenants results in:

Unable to save
Expected([200, 204]) <=> Actual(401 Unauthorized) response => #&lt;Excon::Response:0x0000000b521a10 @data={:body=&gt;"{\"error\": {\"message\": \"Could not find project, test2.\", \"code\": 401, \"title\": \"Unauthorized\"}}"

It seems we serialize the tenant choice and use forever after - we should probably clear that if the user/password has been changed, as the list of available tenants will now be different