Just stood up a development instance of Portal 10.6. Trying to add items from secured services. It picks up that they are secured, but the option to store credentials is not there for us. Can't imagine this functionality is no longer there, so I'm wondering if anyone else has seen this behavior, or can direct me to where this option is now if it has changed. The documentation seems to say that it should be there, so maybe our install of Enterprise didn't fully work?