The main app directory used to remain at the root of the internal storage of the device when the app was uninstalled. Due to the recent changes in the Android file system, the root of the internal storage is no longer supported. You can transfer such data to the private folder after a new Locus installation.

• install Locus Map Pro 3.56.x
• after the app initialization, the old app directory is detected:
  
• tap Change directory
• Locus needs to get permission to access its files - it's necessary to confirm the directory selected in the system file manager
  
• Locus moves all data to its private directory - it may take a few minutes depending on the size of your data
• restart the app

• You can go on using the app with a new empty database and no offline maps
• If you download offline maps or record new tracks you risk that you can lose them when you load the old data later - the new data will be overwritten
• You can load the original data any time from Settings > Miscellaneous > Default directory > Load app data.