I maintain a base set of waypoints and tracks for my GPS that are useful when travelling in Baja Mexico. Often I start with this base set then add the waypoints, tracks and routes specific to a trip to create the plan that I load into the GPS for a Baja trip.
With each trip, I seem to find both new items to add to the map and changes to existing spots. For example, recently I've noticed that a number of Pemex fuel stations have changed to Chevron. Previously the national brand (Pemex) was the only fuel but I guess private companies can now enter the market. I've been updating these as I come across them.
Here is a map with my current base set of points and paths. You might find it helpful on your next Baja trip.