Files marked as missing Missing but they are in my desktop

Locate media has always worked in the past if your only moving/renaming the root folder for everything.  

Sounds like your pretty experienced with PP at some level from how you point out the locate media tool, and its attempt to use it to solve the reconnection issues.

a few things to consider, I cant tell how big that program / timeline is from the screen grab - I will say, I have had this issue once with a big program,  that was a 6 hour version, with lots of cuts etc - it took a few min for all the media to relink after I pointed it - meaning, it foudn the file, but the thumb nails, and other metadata used to display the timeline itself would not show until PP completed some sort of background process rebuilding I assume cache files, and all that sort of stuff.  It was an older version of PP, so not sure if that behaves the same in the latest version or not, but if you could confirm how long you waited after location attempt for the time line to display?

Also, after locating, did it find the files or not?  did you change ONLY the folder name, and file names remained the same?  A suggestion, dont have search your entire drive, point it specificaly to the folder you renamed, as It seems you very clearly knwo where its located and what its called.