I might not have been clear regarding the 737. The CS Civa ins from the 727 placed into the 737 does not work, no power. It would not respond. The Delco Civa 1.51 powers up, loads  waypoints but that's it. You have use the autopilot and manually input the heading to steer the legs. The 737 needs a further update to allow a functional ins.
If you can live with that, the automatic switching of waypoints is just an inconvenience. It improves your situational awareness because now you have to pay attention to it. If not use a gps.
I would like to see a civa on the console, that would make the 737 complete.