When using "/UserACLs?username=foo@bar", MCF always refers to samAccountName now.
Size of samAccountName is specified as less than 20 characters.
Size of Login Name is specified as over 20 characters(256).
if a user does not support old version of OS and support only new version, it is hard for ManifoldCF to restrict 20 characters of Login name.
We want a compatibility switch in the configuration switch.