Copying of Tracks by their type not saved

The new preference "Copying of tracks by their type" is not retained after mkvtoolnix is closed and re-opened. The expected behaviour is that it would be saved as a preference. I checked the other preferences to make sure and they all seem to save over shut down and restart.

It works great when set each time though.

Its been a real time saver for me, so thanks for the feature.