Replicating, Moving and Duplicating to other open databases

As far as I can tell, one cannot replicate a file in the universal InBox of a database into another open database. One can drag and drop a file into another open database in the sidebar but then one has to go and sort the entries in the second database’s InBox. It would be nice to be able to replicate, move or duplicate an entry into specific folders of another open database.

I have not tried using the Sorter for this. I presume one can add folders from different databases that can then be sorted into a user’s different databases.

This is impossible per se. A future release might support some kind of linking but you can already do this on your own by using Edit > Copy Item Link, switching to the other database and creating a new bookmark with this link.