@santjagodecuba1969: @santjagodecuba1969: Your groups are saved on your browser by default, and maybe did you clear your browser?
We have our automatic backup: https://www.youtube.com/watch?v=NuqWMXu9hak It's a feature available for our patrons and enabled automatically. Are you a patron? In this case, we will be responsible for your data and save it on our cloud, and you can easily recover any version from the latest ten days.