HP CIFS Server Administrator Guide Version A.02.04.04 (5070-6710, October 2011)

of the Windows 2000, Windows XP, or Windows Vista ACL information is retained and retrieved
by the Samba server, some of the information may be lost or changed in some cases.
NOTE: The ACL support is not an Windows 2000, Windows XP, or Windows Vista ACL emulation,
but rather access to UNIX ACLs through the Windows 2000, Windows XP, or Windows Vista
client. Therefore, you cannot run Windows applications which require full, perfect Windows 2000,
Windows XP, or Windows Vista ACL support.
54 Managing HP-UX File Access Permissions from Windows NT/XP/2000