Not tested, but should work something like this.
- Close Joplin on your PC
- Rename your Joplin profile to
joplin-desktop-org
- Start joplin (a empty profile is created)
- Close Joplin
- On your Android
Configuration > EXPORT Profile
- Copy the files to your PC in the empty Joplin profile and replace all files
- Rename the
mobil.sqlite
todatabase.sqlite
- Start Joplin
- Export all Notes as JEX (
File > Export all > JEX
), this export should now include your mobile notes
9 Configure sync on youre PC - Than delete all your data on Joplin mobile in the Android app settings
- Configure Joplin to sync to your Synctarget