My suggestion is to reword the dialog to be:
Then the choices will be 'Add', 'Overwrite' and 'Cancel'Do you want to replace the contents of the selected folder?
If you select 'ADD', the new presets and folders will be added and the existing presets will remain there. If you select 'OVERWRITE', all existing presets and sub-folders will be destroyed and the imported data will be used instead.
This way it's clearer what you are selecting and 'Add' is the first option.
Just me?
