Start WildFly standalone Go to the admin console, create a new security domain Add new authentication module Add some options to the newly added module Add another module Clcik to edit options for the second module. Options for the first module appear. Clear the text-box and add some new options. Save changes. Server returns a success response. Reload server. Reload tab (control+F5). Go back to edit the same security domain. Module options has disappeared, but they are still present in standalone.xml (configuration has been successfully saved). Same happens if you go to the management model. Data is not read.