Android +11 Scoped Storage
First of all, the interface, for users who were already using previous versions. By default the new 'unified interface' is used. Going back to the old one is easy: Global Settings-->'Unified Interface' (remove selection).
The complex part, the new storage system:
Version 9.x uses the Android SDK level that forces apps to use the private storage of each app, restricting the options to access the root of internal storage and SD.
This prevents keeping the maps/tracks,... where the app has always had them.
One of the important consequences of this change is that if private folders are being used, and the app is uninstalled, ALL data is deleted, so it is important to keep a copy of important data.
Not everything is lost! The Android file browser (Files) does not make it easy to access and copy operations in the app's folders. But there are browsers, such as Explorer: Explorer that can access the app folders, in the path:
Android/data/
com.orux.oruxmapsDonate/files/oruxmaps/
In that path are all the data of the app, you can access them and copy/move data there.
Another file browser that can access private app folders: Xplore
And if you are using Android 13, you can use this: xda-developers
Another option, it is a trick
1.-Unisntall the GP version.
2.-Install and open (IMPORTANT!, IF THIS SMALL APP ASKS YOU FOR PERMISSION TO ACCESS FILES, YOU MUST SAY YES) this small apk:OruxMapsGP0.0.2.apk It is an empty apk, it allows you, when updating to the real GP version, to keep permissions about access to the internal storage, like the old versions.
3.-Finally upgrade to the GP version from Google Play. IF THE APP ASKS YOU TO MIGRATE TO ANDROID 11 STORAGE SAY 'MAYBE LATER'.
After the upgrade, the app should be able to access all the folders, including the old from root SD or the root internal storage.
Remember do not migrate to Android 11!
And if you have to uninstall the app, you have to do the same procedure if you want the app to access the old folders.