Madsonic Support

So I am on the newest build of 6.0, and this feature is finally working for me. It worked before on 5.x builds, but I was never able see any of the artist information, bios, etc. All of that is displaying now, but I have two questions:

1.) Is there a way to re-run this but only for missing artists?
2.) Is there a way that this function can be triggered every time a new scan is done so if new music is found by a new artist, the cover and bio information automatically gets populated?

Thanks.