More Word Count Issues

I am using Scriv and Windows 10.

When I perform a search using a keyword phrase as my search criterion, I notice that all of the selected documents are included in my session target box.

This is not the behaviour I want, as obviously the selected text is not new material and, when I exit that selection, my word count shows as approx minus 6K.

Is there a way to resolve this apart from exiting the program?