Google says a technical issue cause...

After weeks of some Google Maps users reporting that their Timelines had been wiped of all the places they’ve visited, as spotted by 9to5Google earlier this month, Google has confirmed that some users’ data was deleted and is, in some cases, unrecoverable. In a statement to , Google spokesperson Genevieve Park said, “We briefly experienced a technical issue that caused the deletion of Timeline data for some people.” Only users who had backups turned on will be able to restore their Timelines, according to the statement.

Google recently data, and backups don’t appear to be on by default. To enable them, you have to go into Your Timeline in the Maps app and update the settings from the cloud icon there. The incident caused some users to lose years’ worth of location history. And while some who had backups enabled prior to the issue have said they were able to restore their Timeline data, others on said they weren’t able to get it all back even after importing their backups.