Rob, i'm having the same issue.. I can't find the exact setting to allow the call forward to any number, including offnet calls. I've went through the service param's for "Forwarding" but I still can't find the right one.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.