This was an upgrade from Android 13 to 14, the device has never been wiped, things worked fine on Android 13 as late as in August. I cannot say how I survived for so long, but I did.
But more importantly - whew! I found all my 18.66 GB of Locus data in /storage/emulated/0/Locus (equivalent to /sdcard/Locus).
I see that in Locus > Set up > Settings > Backup & filesystem > File system manager > Set the main directory it is now clear that the "Internal storage" (ie /sdcard/Locus as above) location is no longer a valid option and the suggested location is instead
/storage/emulated/0/Android/data/menion.android.locus/files/Locus.
So data seems OK so far, on to migrating the data and setting things up to work smoothly from now on.
The problem with the suggested location is that the file managers cannot access /storage/emulated/0/Android/data/* locations.
I see here that there is a tool for transferring the data: https://docs.locusmap.app/doku.php?id=manual:faq:single_update
Though it seems it is now accessible through Locus > Set up > Settings > Backup & filesystem > App data transfer.
I am not sure why this transfer hasn't triggered before for me, and if it will indeed be able to handle my (unusually large?) amount of data without a snag. I don't have that much free space on the device, but maybe I could free it up.
It seems that I will still have a more complicated procedure adding/modifying custom generated map data in the future. I used to just do this with my Android file manager/editor apps. But I guess there is no simple way around it anymore.
But more importantly - whew! I found all my 18.66 GB of Locus data in /storage/emulated/0/Locus (equivalent to /sdcard/Locus).
I see that in Locus > Set up > Settings > Backup & filesystem > File system manager > Set the main directory it is now clear that the "Internal storage" (ie /sdcard/Locus as above) location is no longer a valid option and the suggested location is instead
/storage/emulated/0/Android/data/menion.android.locus/files/Locus.
So data seems OK so far, on to migrating the data and setting things up to work smoothly from now on.
The problem with the suggested location is that the file managers cannot access /storage/emulated/0/Android/data/* locations.
I see here that there is a tool for transferring the data: https://docs.locusmap.app/doku.php?id=manual:faq:single_update
Though it seems it is now accessible through Locus > Set up > Settings > Backup & filesystem > App data transfer.
I am not sure why this transfer hasn't triggered before for me, and if it will indeed be able to handle my (unusually large?) amount of data without a snag. I don't have that much free space on the device, but maybe I could free it up.
It seems that I will still have a more complicated procedure adding/modifying custom generated map data in the future. I used to just do this with my Android file manager/editor apps. But I guess there is no simple way around it anymore.