I am trying to remove and add some Dockitems to our new Users, so far it goes well with the Built in Tool and policies. Just these three Apps don't work.
I am using the following path
file://localhost/System/Applications/TV.app/
file://localhost/System/Applications/Music.app/
file://localhost/System/Applications/Launchpad.app/
I'm aware that there are other tools like dockutil and dockmaster, but I would like to use the built-in functions. Am I doing something wrong or is this a known issue?

