As far as I experienced Non-Actors like Items ignore Client-Only or Server-Only Events. They are are just fired on both sides.
However, for Client-Only/Server-Only Operations you could use “Has Authority” Function together with a Branch. (True=Server / False=Client)
Additionally everything reagarding replication is ignored, but to make the Client know the INI-Options you need the Server to tell this to the client (replication).
A Workaround would be to create a Structure (which is an Actor) and make this Structure read the INI-Option. Then store this Optiin into a variable and replicate this variable. You maybe have to use the “Fore Replication now” Function to make it replicate immediately. After the Options are stored inside this variable read this options from inside your Item (getAllActorsofClass <yourStructure> ==> get first element of Array ==> read variable).