While making changes of field names, the Blueprint has proven to be a wonderful help in changing all the uses of a name within an entire form. No more crawling through object after object to find hidden uses.
I encountered a small anomaly in that with the Blueprint open, Find and Replace is available in Edit>Find. It behaves more like Find Next though, by highlighting the first occurrence of the last word(s) I searched for within the file.
Choosing just Find, opens the Find bar at the top of the Blueprint window. From there I can check Replace to expand the bar and enter the new word(s) the click All for a global change within the Blueprint.