We have several sites running under CMS6 and CMS7. One site is no longer warning editors that an image is in use when they try to delete it. Usually, if a resource is in use a warning like the attached appears. I have combed EPiServer.config and other configuration between sites that are behaving as expected and the one that isn't.
Is there a config setting that ensures that a warning is presented to the user prior to deleting a file if it is in use? Or has the sites softlink table got into strife?