Find-in-selection gone? DW CC v2017.5

Hi there!

I'm using Dreamweaver CC, v2017.5 at the latest update.

I used to be able to find/replace a string within a selection---select PART of a page, hit ⌘F, put my search string in the top field and my replace string in the field below it, and Replace-all---which would conduct the search and replace JUST within the area that I had selected.

I cannot locate that function now. It's not in the dropdown:

It is not in one of the submenus of one of those, either, that I can find. 

Is it gone forever?