I use some scripts to switch modes.
I keep copies of the config files on my desktop, and then copy them over as needed.
They are crude but work.
Once the app has registered do *00 in the dialer and send, this will invoke a macro which you can then select the mode required and the script it invokes copies over a mode specific mmdvd_bridge.ini file and restarts the service.
I have attached examples, hope it's useful