Unfortunately, the quick data transfer from Locus Map 3 Classic to Locus Map 4 as in Android 11-12 is no longer possible due to the new Android restrictions - Locus Map 4 can't access Locus Map 3 Classic's main directory in /Android/data/ sector. The process is therefore a bit more complicated:

• open Locus Map 3 Classic > go to settings > Miscellaneous > Default directories > Unload app data - select some accessible sector, e.g. /Android/Download/
• open Locus Map 4 > go to settings > Backup&File system > Data transfer > Load app data - select /Android/Download > confirm
• restart Locus Map 4

Due to the changes in the Android file system in November 2021, Locus Map 3 Classic and Locus Map 4 can no longer share one data directory. It is possible to transfer the data from one app to the other though:

• install Locus Map 4
• open Locus Map 4 settings > Backup & filesystem > App data transfer > Load Locus Map Classic data
• restart Locus Map 4

Both apps share the same data directory but each has different settings. So please do the following:

• install Locus Map 4 to the same storage as your Locus Map Classic (don't worry about any conflict)
• make a complete backup of Locus Map Classic data
• open the backup file in Locus Map 4 backup manager
• restore all items except the points/tracks/routes database (no need to do it):
  
• restart Locus Map 4
• (uninstall Locus Map Classic if you don't need it any longer)