I don't know of any way to do this, as each uses its own unique system of files to manage these preferences.
Just out of curiosity, why do you switch between the two? Perhaps, if it is a difference of features that makes you switch, you can find a Firefox plugin that will eliminate your need to switch.
Comments
Just out of curiosity, why do you switch between the two? Perhaps, if it is a difference of features that makes you switch, you can find a Firefox plugin that will eliminate your need to switch.