Use fsecurity to apply a new ACE or inheritance without deleting existing

Has anyone successfully used fsecurity to apply a new ACE and/or set inheritance on a folder (tell it to inherit from parent) without deleting currect ACES that may be applied to it?


I can successfully apply a new ACE and/or trigger inheritance, but it always ends up replacing any current ACES on the object.  I'd really prefer not to have to write a script to do directory listings of every file and object then loop them and walk them one by one to read then create a SDDL file and apply it one by one.