pisum’s post has a quoted chunk of text that is the script I used. One of the lines toward the bottom (almost cut off to the right) is the word coordinates, and you insert the coordinates from your KML file into that script and save it. I opened my generated KML in Notepad and copy-pasted the block of coordinates and pasted it into the script.
https://forum.inaturalist.org/t/possible-to-use-a-circle-kml-to-create-a-location/10271/4
I was actually shocked that it worked given how inept I am with coding