As long as you have selected the correct program for Use , or are happy to use the Always ask option, it should do what you want, as I have seen no evidence that Firefox changes what you have set (even if it does not remove the erroneous options).
As long as you have selected the correct program for Use , or are happy to use the Always ask option, it should do what you want, as I have seen no evidence that Firefox changes what you have set (even if it does not remove the erroneous options).