Using modified quickstarts sales-post-sig and idp-sig, where in jboss-web.xml element <vault> are added parameters for user-defined locations and reload time, the configuration for IDP is not reloaded or at least changes are not applied. When user add new ValidatingAlias or change existing one in configFile picketlink.xml, there is no change in IDP functionality.
For SP it works fine and configuration is reloaded every 5 sec.

<param>
  <param-name>timerInterval</param-name>
  <param-value>5000</param-value>
</param>
<param>
   <param-name>configFile</param-name>
   <param-value>/path-to/picketlink.xml</param-value>
</param>