All the configuration that you have done to the sensors are on the sensors. If you add them to the Windows IDS MC install, the configuration of the sensors (filters, signatures, tuning, etc) will be imported into IDS MC.
Seems like the only thing that is not part of the sensor config is the config in SecMon where you define correlation and notification rules. You can recreate these manually or we can search for some means to back this up, if possible.
Hopefully this is what your are looking for confirmation for. Let us know if not.
thanks
peter