How to authenticate management user using alternative properties file?

Issue

• could you explain if it is possible to allow EAP to use an alternative mgmt-users.properties file as default on startup?

I have tried changing the path in the standalone.xml as follows:

<management>
       <security-realms>
            <security-realm name="ManagementRealm">
                <authentication>
                    <local default-user="$local" skip-group-loading="true"/>
                    <properties path=":/mgmt-users.properties"/>
                </authentication>
           ...
          </security-realm>

but this doesn't seem to pick up users in that alternate file.