Currently, if you add a workflow from a profile's main page vs. from the workflow page, it works however it does not tell you if additional profiles have this workflow assigned to them. If you delete that workflow- and it happens to be attached to other households- it deletes the workflow on the profile you are currently working with along with the additional households who have this workflow attached to. If you choose to delete the workflow you get a message asking "are you sure you want to delete this workflow", the message should be edited to also alert you if and when the workflow is attached to additional households/profiles.