Add features to view  and export only circulation coin

I collect only circulating coins by year and mint

If you could add features to view and export only circulation coin for a specific KM it will be great.

One example i can give is , USA 5 cent km#381 , this coin has circulating, proof and sets
now i have to view only circulating coins which are not in my collection and export them. But i don't find any option to that.

Please see the attachment for more clarity

Hello,
A similar idea is already discussed here: https://en.numista.com/forum/topic56818.html