How can I tell which date on the zoplicate pane corresponds to which duplicate entry? Also, is there a way to just delete the entry I know I don't want?

In the screenshot, I have 2 duplicate entries at the top. I can see that the first one is the one I want to keep, because it's tagged (green dot), and because it has a pdf. In this case, I'd like to simply delete the second entry. It would be very useful if I could delete it by, on the left pane, simply clicking on it.

Less often, I want to merge duplicate entries, but the problem is that, in the zoplicate merging pane on the right, I don't know which date corresponds with which entry on the left; I can't tell which entry date should be the merge master. It would be very useful if, when I clicked on one of the dates, the corresponding entry changed color on the left. Or if there was some other disambiguation method.