Maps and Programs Disappeared

We received our first snowfall of the season today and I returned from work early excited to send Yarbo out on its first mission to clear the driveway. Unfortunately, when I went to deploy Yarbo the maps I created two days ago, and visible just 3 hours before, are now gone. I had saved the maps and attempted to reload the saved version to no avail. What can I do other than remap my driveway?

Well I may have stumbled on the solution, but still not sure why. I loaded the program saved two days ago, and then saved the map again and then loaded the "re-saved" map. This map worked and all that needed to be done was refresh the programs.