Navigation: Home, Work, Favorites missing

Has anyone else experienced the navigation losing their home, work, & favorites? A few weeks ago I noticed the map screen went black for a few seconds with a message saying something about Updating, then later while attempting to set the GPS to plan a route back home I noticed my Home (and work and favorites) were seemingly erased from the system. I manually added them back, and then a week later the map screen displayed another Updating message when I got near an area with a closed street due to construction and then I noticed my home, work & favorites were gone again. Other than using an alternative GPS through Android Auto, has anyone figured out a fix for the built in navigation? Thanks!