Question:  I was asking how much data is stored by a save file, IE: does it save a map of connected devices, and what roles they have assigned?
Answer:  The saved file creates a map of the default roles and user configured roles / channels of all connected devices.  From the CCM browser and the local base / attached devices you can select what user defined roles you want to assign to the base / beltpacks / remote stations / speaker stations.  
If you upload a saved map .cca file via the CCM once the map is uploaded you can go to the overview screen and from the attached devices click on one of the devices, say a HBP-2X beltpack and assign either the local config or one of the custom roles with its specific setting to that device.

Question:  If I restore a saved file, will it restore roles to all connected devices if they have been changed?
Answer:  If you restore a saved file, it will not overwrite the current role settings on the base / connected devices.  From the overview map you can select a device and change its currently selected role.

Question:  Can I select a previously unused pack not previously connected to the system and have it automatically power on to a defined role?  
Answer:  It will come up in local config role and will need to have a user config assigned to it.