Power Query (Maybe)

In the absence of a Power Query solution, or any other proposal, let's go "old school":

Use a Helper Column, say Column M. Then . . .

Cell: M2
=IFNA(VLOOKUP(G2,P:R,3,FALSE),G2)
and copy down to end of data

Then copy the entire column M.

Paste Special | Values over column G

Delete column M
(and any unrequired data)

Save as .csv file (recommend saving with a new file name)

Upload .csv file


You could, if you wish, record a macro while you go through the steps manually. However, it will need tweaking and it may not be worth the effort.