Delete all songs, keep mixer settings - please

Could it be possible to have an option to delete all songs and playlists only (without erasing mixer and other setting)?
Unless there's a way to import/export the app setting, this would very helpful.
I often sync the library between two devices and the only way to do this is to delete all songs+playlists and import a full backup. However, in the process, all mixer and other setting are lost and every time I have to set the mixer setting manually for each individual style again and again.
The current option to delete all songs and setting is not very useful. I can get the same result if I clear the app data or if I uninstall and reinstall the app.
But deleting songs+playlists while keeping the setting is really needed