Subinacl.exe

I’m attempting to use the command line utility subinacl.exe found in the NT4 resource kit to replace a group with another in the ACE lists in ALL folders & subfolders on a shared resource. The issue I’m having is that the utility will only replace permissions at the first level of the directory tree and will not touch the subfolders. I am using the /subdirectories switch accompanied by the *.* field. Anyone familiar with this utility and know how to get around this?