From version 2.3.3 You can export setting and import back If You need restore previous setting. (useful for module update etc.)
1/ open configuration setting
2/ export ( ! overwrite previous saved setting file)
3/ click right mouse button to link and select “Save link as” and save into local backup file.
1/ select from saved backup “settings.cfg” file
2/ upload to server ( ! overwrite previous saved setting file)
3/ select source setting number
4/ and select destination setting number
In example on image above, will be current setting 1 overwritten with setting 1 from backup.